Recently I purchased a domestic ticket for a friend. Before doing so, I checked on the site to make sure it's okay to buy tickets for other people, and in the FAQ it says it's fine. I'm based in Cambodia but I used my US credit card. Because he had a reservation already, I was unable to login to my AA account to purchase the ticket, I had to login with his confirmation number. Anyway, transaction went through no problem. A week later, on the day of the flight, I got a phone call from Citibank asking if the charge was valid. I said it was, and they said that it was too late anyway, AA had a problem with the charge and had cancelled the ticket when my friend had tried to check in. I understand the confusion -- the ticket was purchased from Cambodia, etc. But why did AA wait to find that suspicious until my Cambodian American friend showed up at the airport? Seems like that's something they could have investigated when the purchase was made, rather than waiting until an hour before the flight. Also, my AA account (gold) currently has a Cambodia address on it, so with about 5 minutes of looking, it would have been clear that this wasn't credit card fraud. I emailed AA about it and they sent me back a non-related form email about how only US credit cards can be used to purchase tickets. I replied and said that wasn't an appropriate response (the card used was a US credit card), and haven't heard back from for a week. I do understand the confusion and why it might seem like a suspicious charge, but I wish that AA had handled this different, both before the flight, at the gate and in response to my query.