Booked a first class flight, was downgraded to coach for most of flight. Travelocity kept all the money, and said sorry for inconvenience. Can you say FRAUD!! Gets better, I called Delta and paid extra for first class. Then I find out that it was booked as two one way tickets instead of roundtrip. I am into flight for 3400.00 roundtrip through Delta First class is 2800.00. Since I thought the upgrade was for roundtrip, I now get to pay to take luggage back home. I will never use this app again!