Thank you, Marty. As Joanna and Marty have noted, the swift actions we took in the first quarter allowed us to exceed our Q1 financial commitments, one early indicator of our ability to advance towards our goal of generating positive returns again. And though we weren't profitable in the first quarter, our operating margin exceeded our expectations, supported by our improving operational reliability, solid peak period demand, and continued execution on controllable costs. Starting on Slide 7, we delivered better than expected CASM ex-fuel in the first quarter, with unit costs increasing by 7.1%, beating the better end of our revised March outlook. This was partially driven by improved operational performance as our continued focus on driving reliability allowed us to complete more flights than planned, resulting in cost efficiencies. Additionally, we saw a shift in the timing of certain expenses, primarily maintenance-related to later in the year. Also benefiting our cost performance is our structural cost program and fleet modernization program. In the first three months of the year, our structural cost program delivered $30 million in incremental savings, driven by more efficient management of disruption costs and optimizing mid to end-of-life maintenance spend. With to-date savings of $100 million, we remain on track to deliver run rate savings in the range of $175 million to $200 million by the end of the year, and we expect savings to ramp significantly throughout this year, driven by productivity improvements. Our fleet monetization program is coming to fruition, as we continue to replace our E190 fleet with the margin accretive A220s, which deliver a 20% improvement in ex-fuel unit cost economics versus the E190s. By the end of the month, we'll have reached a milestone on our fleet transition with more A220s in active service than E190s. We'll continue to replace our E190s with A220s on a one-for-one basis by the end of 2025, when the E190 fleet is set to officially retire. In addition to better economics, we have already realized $70 million to-date in maintenance savings, and we now expect to realize $100 million in maintenance cost savings through the end of this year, up from the original $75 million goal we previously forecasted. Once we are through this transition period, we expect a more meaningful tailwind to our costs as we return to operating just two fleet types. With regard to our aircraft availability in the second quarter and full year, we expect an average of 11 aircraft to be out of service due to the GTF issues throughout the year. We expect we'll peak in the low teens in the late second to early third quarter. As we run long-range capacity plans to support our multi-year refocus standalone plan, we continue to face uncertainty around the expected number of aircraft on the ground for 2025 and 2026. While we expect this number will increase above 2024 levels, the situation remains frustratingly fluid. We also continue to work towards reaching an agreement with Pratt & Whitney on 2024 compensation. As far as the initial GTF compensation that we had included in our 2024 plan, we had originally been advised that the accounting treatment for this compensation could be recorded as an offset to operating expenses. However, following analysis of precedent industry transactions of similar nature, we will now record compensation as a reduction to aircraft assets or as amortization of maintenance expense. This is expected to have an adverse impact on CASM ex-fuel, as this benefit will now be recognized over a longer period of time. Despite the significantly reduced compensation recognized in 2024 earnings, full-year CASM ex-fuel growth is expected to be within the range of our initial January guidance, partially driven by incremental cost offsets we have already internally identified. For the second quarter, we expect CASM ex-fuel to increase between 5.5% and 7.5% year-over-year, coming down from the first quarter levels as we lap a full year of costs related to our 2023 pilot agreement and as we execute on our controllable costs and fixed cost reductions. For the full year, we continue to expect CASM ex-fuel growth of mid-to high-single digits year-over-year. To better align our cost base with our operating levels during this challenge growth period. We've scaled back fixed costs spending where we can. In January, we offered a voluntary "opt-out" program, to targeted workgroups across our operation and support centers and the cost savings are on track with our expectations. In addition, we are rightsizing our real estate footprint in several airports with above-the average airport costs, such as LaGuardia and LAX. Combined, these fixed cost savings are expected to drive 0.5 point of unit cost savings for the full year, which is reflected in our full year guidance. Additionally as Joanna mentioned, we are utilizing technology to further enhance our efficiency and productivity and we expect it will be a main driver of incremental cost savings. Finally, though we no longer plan to approach breakeven profitability this year, I'm confident we have a strong plan in place to overcome the headwinds we face and the continued control of our cost structure will provide the baseline support we need to become profitable again. Turning to liquidity and our balance sheet on Slide 8. As we continue to work through near-term growth challenges stemming from the GTF issues, we are exploring cost-effective and capital-light ways to grow our fleet. To date, we have committed to purchase or purchased 12 A320 aircraft off lease that were set for return to lessors. Looking ahead, we have further optionality and could elect to extend the life of approximately 30 A320 aircraft in total, which represents approximately 10% of our total fleet today. We also continue to receive new aircraft from our order book with Airbus. And in the first quarter, we took delivery of eight aircraft. Through the remainder of the year, we expect to take delivery of 19 aircraft for a total of 27 deliveries in 2024, 20 of which are A220. Prioritizing A220 deliveries in the near-term helps to better match the needs of our customers with our cost goals, while continuing to evolve our product offering, as the A220 offers 90% more premium seating than our E190 aircraft. In addition, all of our 2024 and 2025 A321neo deliveries will be configured with our award-winning Mint product, further increasing our mix of premium ASN. Ultimately our fleet is a key enabler to delivering a more premium experience, which is a core piece of our strategic evolution to better serve the full spectrum of leisure customers. We ended the quarter with $1.7 billion in liquidity excluding our undrawn $600 million revolving credit facility. As we reach the peak of our fleet modernization efforts, we have been actively financing our aircraft deliveries and we have secured nearly $1.6 billion of committed financing year-to-date. Finally, we continue to opportunistically look at hedging as a means to manage risk, particularly in a market that continues to increase volatility as a result of geopolitical concerns in the Middle East. As of today, we have hedged approximately 27% of our expected fuel consumption for the second quarter and approximately 16% for the full year. In closing, I want to thank our amazing crew members for all their hard work and dedication day in and day out. We are 100% focused on executing on our strategic initiatives to meet the challenges of our industry. We have already taken action across the board as evidenced by the deferral of $2.5 billion of planned CapEx, significant network changes, the launch of our revenue initiatives and our continued laser focus on costs all with our eyes trained on our ultimate goal of profitability. I am confident we are building a strong plan to fully leverage our unique position in the market. And as you can see from our results, we are already executing on this plan and moving with urgency to set the airline on a path back to delivering long-term value for our owners and all of our stakeholders. With that, we will now take your questions.