Thank you, Melissa, and good morning, everyone. As you just heard, we again delivered strong financial results this quarter while continuing to make progress on our strategic objectives. The financial results in 2023 demonstrated the resiliency of the business in the face of a number of economic headwinds. Let's start with the quarter results. Total revenue came in at $663.3 million, a 7.2% increase over Q4 2022 with more than 80% of revenue for the quarter recurring in nature. This exceeded the midpoint of our guidance by $8 million. Half of this outperformance was due to the contribution of Payzer, which closed on November 1st and was not included in our guidance, while the other half was a variety of small beneficial items. In total, adjusted operating income margin for the company was 39.6%, which is up from 38.5% last year. High incremental margins on corporate payments volume and interest earned on custodial cash balances, as well as significantly improved credit and fraud losses were the primary drivers of the margin increase. From an earnings perspective, on a GAAP basis, we had net income attributable to shareholders of $84.9 million or $1.98 per diluted share in Q4. Non-GAAP adjusted net income was $163.9 million or $3.82 per diluted share, and this represents an 11% increase over the prior year. I would like to take a moment to reflect on these results in the context of the overall macroeconomic environment. Fuel prices were down 13% year-over-year in Q4 while the federal funds rate was up 100 basis points from the end of Q4 2022 to the end of Q4 2023. Our cost of financing and operating interest was up almost $35 million year-over-year. Yet we grew revenue and earnings significantly, which reflects the reduced impact of fuel prices and interest rate volatility on our overall results and demonstrates the resiliency we have talked about repeatedly. Now let's move to segment results, starting with Mobility. Mobility revenue for the quarter was $350.1 million, a 5% decrease compared to the prior year. The domestic fuel price in Q4 was $3.76 versus $4.34 in Q4 2022. This decline in fuel prices reduced segment revenue by approximately $24.9 million. In addition, Mobility revenue growth was impacted by lower late fees, which I will discuss in a moment. These lower late fees reflect the changes we made to credit policies that have dramatically improved credit losses and financially outweigh the impact of lower late fee revenue. The net interchange rate in Mobility was 1.26%, which is up 15 basis points from the prior year. The lower fuel prices compared to last year, contractual increases due to higher interest rates and renegotiated contracts with some of our merchants led to the increase in the net rate. The increase in the net interchange rate combined with growing volumes over the past several years also means the sensitivity to changes in fuel prices is increasing and now stands at $20 million of revenue impact and a $0.30 EPS impact for an annualized $0.10 change in fuel prices. It is important to note that despite the higher gross EPS sensitivity to fuel, which reflects the growth and success of our Mobility business, our overall earnings sensitivity to fuel price is lower than the past as nonfuel related revenue is an increasing portion of our overall earnings mix. As you see in our metrics, while the net late fee rate increased versus Q3, it was below the prior year results. Overall, finance fee revenue was down 20% due to lower fuel prices and 28% decline in the number of late fee instances. Much of this decline is from a new portfolio that transitioned to us last year, which had higher late fee instances during the transition period, while the remainder we attribute to the stricter credit policies I mentioned earlier. Again, emphasizing that the improvement in credit losses far outweighs this lost late fee revenue. The segment adjusted operating income margin for the quarter was down 2.1% compared to last year at 43%. Lower fuel prices and higher interest rates hurt operating margins, although this was partially offset by significantly lower credit loss rates. In addition, the acquisition of Payzer, which contributed $4.3 million in revenue with essentially zero adjusted operating income decreased its segment margin by 60 basis points. Turning now to Corporate Payments. Total segment revenue for the quarter increased 22% from the prior year to $135 million. Purchase volume issued by WEX was $22.8 billion, which is an increase of 33% versus prior year. The net interchange rate in this segment was up 10 basis points sequentially at 52 basis points, predominantly due to the recognition of network incentives based on full year performance. Breaking this segment down further. Travel related customer volume was $16.2 billion and grew 40% compared to last year. Revenue from travel related customers was up 39% versus last year. This reflects continued strength in consumer travel demand in the US and Europe as well as growing adoption of virtual cards and travel. We believe that there is more room for growth as our OTA customers continue to emphasize their merchant model, and we expand the types of payments that we are able to support. Nontravel related customer purchase volume grew 21% versus last year, and revenue was up 5%. Volume growth was led by continuing strength in the partner channel, but importantly, approximately half the revenue growth came from our direct channel. Our direct business is an important channel that we have invested in over the last year and we are starting to see the positive results of this segment. The segment adjusted operating income margin was up 10.5% over the last year to 58.4%. There has been significant improvement in these margins during the year as volume accelerated. In fact, this is the second quarter in a row where more than 100% of the year-over-year revenue increase flowed through to adjusted operating income margin. Finally, let's take a look at the Benefits segment. We continue to drive strong growth in Q4 with revenue of $178.2 million. This represents an increase of $37.5 million or 27% over the prior year. Approximately half the revenue growth is due to contributions from custodial assets and the remainder is from the Ascensus acquisition, increases in the account base and purchase volume growth. SaaS account growth was 7% in Q4 versus the prior year. Benefits segment volume increased 10%, leading to a 5% increase in payment processing revenue. Custodial cash assets, including those on and off balance sheet, were $3.9 billion on average in Q4 versus $3.5 billion last year, representing an increase of 13%. Of the $3.9 billion total, approximately $1 billion was held at third party banks with the remainder held at WEX Bank. We realized approximately $45.3 million in revenue in total from these deposits in Q4 versus $25.6 million last year. Although market interest rates declined during Q4, the blended yield of 4.6% was consistent with Q3. Compared to last year, the higher yield of those assets contributed $11.1 million in revenue, while the increase in balances contributed $8.6 million. In the first full quarter of ownership, Ascensus contributed $10.7 million of revenue, which was in line with our expectations for the quarter. The integration process is going well. Recall that Ascensus was a customer prior to our acquisition. So all accounts were already on our technology platform and we are through the remainder of the integration planned during 2024. The Benefits segment adjusted operating income margin was 33.2% compared to 28.1% in 2022. The high flow through on the revenue from the invested HSA deposits is the primary driver of the increase in margins. Shifting gears now I will provide an update on the balance sheet and our liquidity position. We remain in a healthy financial position and ended the quarter with $976 million in cash. We have $731 million of available borrowing capacity on the revolver and corporate cash of $172 million as defined under the company's agreement at quarter end. The total outstanding balance on our revolving line of credit and term loans was $2.9 billion. The leverage ratio, as defined in the credit agreement stands at 2.5 times, which is at the bottom end of our long term target of 2.5 times to 3.5 times. In December, we exited our interest rate hedge positions leading to an immediate cash benefit of $15 million. As discussed in prior calls, the company wide net exposure to changes in interest rates has declined as we've grown the custodial cash assets in our Benefits segment. As a result, we determined that these hedges were unnecessary and we could exit them at favorable terms. Exiting the hedges accelerated the cash benefit we expected to see from the hedges to upfront rather than over time, which we intend to return to shareholders through share repurchases, and we have already repurchased $35 million to date through last week in 2024. As a result, we will see an increase in interest costs in 2024, especially in Q1 when rates are expected to be highest and with the elimination of the hedges that were already set to expire midyear. I want to emphasize this reflects our belief in the time value of money benefit of receiving the cash earlier than we would have otherwise and returning this cash sooner to our shareholders. Going forward, we intend to continue to evaluate our overall interest rate exposures annually and make adjustments to our hedging strategy as necessary. During January, we successfully repriced $1.4 billion of term loans, reducing the spread over SOFR by 25 basis points and removed the credit spread adjustment. This will lead to interest savings of more than $5 million in 2024 on this part of debt. There were no other changes below the agreement. Next, I would like to turn to cash flow. WEX generates a significant amount of cash. Using our definition, adjusted free cash flow is $517 million for 2023. This compares to our adjusted net income of $646 million. A reminder, as I have discussed previously, that rapid fuel price declines at the end of 2022 increased adjusted free cash flow by about $150 million to $175 million that year, which reversed during 2023. Taking this into account, adjusted free cash flow for 2023 was slightly less than adjusted net income, which is what we would normally expect. We are committed to driving strong cash generation and deploying it by both repurchasing our own shares and investing in our business with an overall goal of maintaining strong long term growth rates. For the year, we repurchased 1.7 million shares at a total cost of approximately $295 million, including approximately $150 million in the fourth quarter. As a reminder, we also extinguished a $310 million convertible debt in Q3, which further reduced fully diluted share count by 1.55 million in Q4 compared to the prior year. Going forward, we expect to continue to allocate a portion of adjusted free cash flow to repurchase shares. Finally, let's move to 2024 revenue and earnings guidance for the first quarter and the full year. Starting with the first quarter. We expect to report revenue in the range of $650 million to $660 million. We expect adjusted net income EPS to be between $3.40 and $3.50 per diluted share. For the full year, we expect to report revenue in the range of $2.7 billion to $2.74 billion. We expect adjusted net income EPS to be between $15.90 and $16.40 per diluted share. Let me spend a couple of minutes going through some of the larger assumptions in our guidance. First, a couple of high level macro assumptions. We are basing our guidance on US GDP growth of around 1.5% for the year, which we have taken into account in our growth expectations. We are also expecting interest rates to decline in line with the market, which implies 5 quarter point rate cuts during the year. We have not included any future M&A activity or share repurchases, except as we have already announced them. Mobility revenue growth, excluding the change in fuel prices, is expected to be at the high end of our long term target, which is 4% to 8%, including approximately 2% for the contribution in Payzer. Fuel prices are expected to be lower in 2024 than in 2023, which is a headwind to revenue and earnings that is embedded in our guidance. We are assuming an average fuel price of $3.50 in the first quarter and $3.55 for the year, which compares to $3.86 for Q1 2023 and $3.82 for the full year 2023. The fuel price decline is expected to reduce revenue and earnings per share by approximately $18 million and $0.27 per share in Q1 and $54 million and $0.81 per share for the full year compared to 2023 using the new sensitivity that I mentioned earlier. Again, this fuel price impact is already embedded in our guidance. Melissa mentioned some of our growth drivers earlier, which I will reiterate, including strong continuing sales engine, pricing optimization, full year benefit impact of Payzer and stabilization in the portfolio from the credit policy changes made a year ago, which will also reduce the revenue drag from lower late fees that we saw in 2023. The Corporate Payments segment is expected to grow high single digits. Similar 2023 results, we expect the net interchange rate to come down slightly, mainly due to customer mix. We see significant demand for travel and expect to improve nontravel revenue growth in 2024. Finally, the Benefits segment is expected to grow 10% to 15%. We have completed the open enrollment season, giving us confidence in the continued growth of this business. Anticipated growth in custodial assets and tailwinds from organic growth and the Ascensus acquisition are expected to more than offset the loss of an individual Medicare Advantage customer. We are on track to remove $100 million of operating costs on a run rate basis by the end of 2024 as we previously outlined. We expect adjusted operating income margins to trend up through the year as we get the benefit of these cost savings measures and the impact of pricing initiatives and scale that Melissa spoke about earlier. As I mentioned earlier, our decision to exit the swaps pulled cash forward, but also results in higher interest expense in 2024. The impact is $0.19 per share in Q1 and $0.52 per share for the full year. Again, this is reflected in our guidance. As we have discussed, we aim to balance our fixed and floating rate assets and liabilities such that we would not expect material changes to overall adjusted earnings this year if there are changes in benchmark interest rates, although, there could be impacts to individual segments. All of this leads to EPS growth in the range of 7% to 11%. Isolating out our fuel price degradation and FX, we would expect adjusted EPS growth to be in the range of 13% to 17%. As I complete my prepared remarks, I would like to emphasize again how pleased we were with our in results Q4 and our outlook for 2024. We have great confidence in our ability to win new customers, expand with existing customers and bring new products to market all leading to continued long term growth of the company. With that, operator, please open the line for questions.