I made the mistake of agreeing to let my old annoying coworker make the airline reservations for a business trip a while back.
I prefer to travel with Delta, but lucky for me he chose American Airlines.
The service was poor, the flights delayed, and the gates for every layover were always moved.
They didn't offer good snacks and you had to buy the food that tasted gross and was very overpriced.
That coworker isn't ever booking my flight again. I don't want to use American Airlines again.