One too many disappointments. Three, to be exact, from US Airways. I flew with them a lot, earning first class upgrades regularly. Then they sold out to America West or some such, but kept the name. They should have kept the North Carolina customer service. After the third incident that left me holding the bag, I moved to American. That was a mistake. Now, I fly (mostly) Southwest. Way fewer disappointments. Do you suppose US Air misses me?