Thank you, Jennifer. Welcome to everyone and thank you for joining our second quarter 2024 earnings call. In the second quarter, we delivered strong adjusted EBITDA growth, significant margin expansion, and accelerated free cash flow. These strong bottom-line results were in line with our expectations and put us on track to deliver against our full year guidance. Our focus on controlling costs and driving operating leverage is clearly evidenced in our Q2 results. Adjusted operating expenses increased just 2% compared to 6% revenue growth. And we drove significant adjusted EBITDA margin expansion of 240 basis points year-over-year and adjusted EBITDA growth of 20%. Our progress to positive and accelerating free cash flow remains an important focus for the company, providing us with additional opportunities to invest in our growth and drive shareholder returns. And a strong second quarter gives us the confidence to raise our free cash flow guidance for the full year. Last quarter, we mentioned an opportunity to refinance our debt, which we have now successfully completed in July. We've significantly lowered our interest cost, extended our debt maturities and upsized our revolver and we continue to deleverage our balance sheet. Increased demand for our software and services resulted in continued share gains on a strong foundation. We have sustained our pace of new wins and importantly, further increased our customer retention rate. Starting with revenue growth. Revenue was up 6% to reach $625 million for the quarter, driven by growth in transactions, TTV and increased demand for our products and professional services. Transactions were up 4%. We saw a slowdown in the second quarter, driven primarily by slower same-store sales and the impact of the Olympics in France. We expect France will bounce back in the fall. Excluding France, transactions were up 5% in the quarter. TTV grew just ahead of transactions by 5%, driven primarily from the transaction growth as well as higher average ticket prices and higher average hotel room rates. Again, excluding France, TTV grew by 6% in the quarter. Finally, here our focus on margin expansion and operating leverage resulted in adjusted EBITDA growth of 20% to $127 million, with strong margin expansion of 240 basis points. In the second quarter, we continued to see stronger relative performance with our global multinational customers. As a reminder, we divide our customer base into two general categories, global multinational or GMN, and small and medium enterprises or SME. We generally used annual TTV to divide customers into these categories, although this measure can vary by country and by customer need. We do not have products or services that are offered solely to one size of customer. We tend to find that customers of all sizes may prefer different solutions. Some larger customers may prefer a simpler approach, while some smaller customers may prefer a more bespoke, high touch global solution. Back to the quarter, global and multinational transactions were up 7% with double-digit growth in the financial services and pharma industries. We saw very solid growth across our top five industry verticals, which account for over 60% of our total global multinational transactions. It is important to point out that we did see global multinational same-store sales growth returning to more normalized levels as we cycle over the technology ramp up we saw in 2023. We have built the most valuable B2B marketplace in travel with the most comprehensive and the most competitive content in the industry. Our strong combination of technology and people delivering the best experiences proven at scale continues to resonate with customers. Our very high customer retention rate with global multinational, which reached 98% over the last 12 months, demonstrates the value that we bring to this important customer segment. GMN TTV growth in the quarter was also strong, up 9% driven by the transaction growth and a two percentage point benefit from higher average ticket prices. Our most recent customer survey is encouraging as we look out over the balance of the year, it shows that our top 100 GMN customers now expect travel spend to be up approximately 10% year-over-year for the full year 2024 and this is an increase of two percentage points versus the previous survey in Q1, driven by improvements in expectations within professional services, mining and the oil and gas industries. The stronger performance within GMN customers highlights the strength of our diversified model as SME growth was relatively muted in the quarter on a transaction basis, GMN growth was 7% versus SME at 1%. As we described last quarter, SME customers have tightened spending controls in the face of sustained higher interest costs and higher inflation. As we also discussed on the call in Q1, this is a broader trend for SME businesses beyond travel spend, given the more challenging macro environment. We are confident that as the macroeconomic conditions improve, so will SME growth and this outlook is supported by our most recent customer survey which showed 82% of our top 120 SME customers expect travel spend to grow or remain flat in the second half of this year. Meanwhile, our new wins performance in SME continues to be strong. As you've heard from our peers in the travel industry, we are seeing a negative impact on business travel in France related to the Olympics. Transactions in France were very strong in the first quarter, but rapidly decelerated and ended the second quarter down 4%. France is actually our second largest country by transaction volume, so it resulted in a negative impact of one percentage point to year-over-year total transaction and TTV growth in Q2, the impact to our revenue growth is smaller. Clearly, we believe this is a temporary impact and we expect to see a return to growth in France from September onwards. Finally, here, growth in our air transactions versus hotel and domestic versus international was consistent in the second quarter. So turning to the commercial highlights. We continue to gain share with total new wins value of $3.3 billion over the last 12 months. Importantly, these share gains are on an even stronger foundation of increasingly impressive customer retention, which is up to 97% at the enterprise level over the last 12 months. Our biggest growth opportunity remains with SME customers, which represents approximately $950 billion of travel spend. We are already a leader in managed travel in this segment, but 70% of this opportunity is not currently in a managed travel program. As our new wins progress demonstrates, more and more SME customers are recognizing the value of our software and our services and a professionally managed travel program. As a result, SME new wins over the last 12 months totaled $2 billion. In the second quarter, 79% of our transactions came through digital channels. Over 60% of those digital bookings came through on our own software platforms, Neo and Egencia, which we continue to believe is an area of significant competitive differentiation for us. The collaboration between American Express and our Amex GBT, Neo1 spend management platform is progressing well, with pleasing results from Amex GBT's most recent digital marketing lead campaign targeting the very large opportunity in the SME segment. Amex GBT's Neo1 customers acquired digitally is on track to grow 2x year-over-year in 2024. We continue to invest in NDC and our marketplace to make sure we offer the most comprehensive, the most competitive content in the industry and to help our partners retail to our premium customers in the most effective way. We're now working with 20 airlines on NDC, and because we own our software solutions in Neo and Egencia, we are very well positioned to lead the changes that are required. We also continue to make business travel more sustainable. Our new agreement with Shell Aviation reinforces our commitment to sustainable aviation fuel. Avelia is one of the world's first blockchain powered book-and-claim platforms for SAF, and we already have more than 30 corporations and airlines participating in the Avelia program, including customers like Bank of America and Google. Also during the second quarter, we published our annual ESG report that highlighted our commitment and our progress in sustainability, governance and developing the workforce of the future. We continue to successfully work with non-governmental organizations to provide safe travel for vulnerable refugees and get rapid response emergency relief workers to disaster zones. Our inclusion groups continue to thrive. We are growing the number of minority owned businesses in our supplier portfolio and we are working with customers to make business travel more accessible for all. I also want to take a moment to thank my colleagues for the clear thinking and swift action that helped mitigate the impact of the recent CrowdStrike incident. We have received countless notes from customers thanking our service team for their outstanding support helping travelers through the disruption to get where they needed to be. And finally, as you saw last week, we provided an update on the CWT acquisition, which is now expected to close in the first quarter of 2025. We continue to work collaboratively with the CMA, which intends to continue its review of the transaction in a Phase 2 investigation as well as with the Department of Justice in the U.S. We believe that a comprehensive analysis will clearly show the transaction will create more choice for customers, more efficient distribution for suppliers, while maintaining a highly competitive environment for business travel services. We continue to expect to receive full approval of the transaction. Before turning the call over to Karen to discuss our results and outlook in more detail, I'm very pleased to introduce David Thompson, our CIO. We have previously discussed the potential of the investments that we're making in automation and AI to drive further productivity gains and margin expansion. And I'm pleased to say we are making good progress as initiatives now move from the pilot phase to implementation. And as I promised on a previous earnings call, David is here to speak more about our progress with RPA, machine learning and AI to create better experiences for our customers and to improve productivity. David, over to you.