Hi there, I am new to collecting miles and even newer to redeeming the miles. My wife is flying from RDU to IST for a trip from Sep 2 to Sep 12. I would like to use miles for that. We have 250k AA miles, 100k CO miles and 150k BA miles, maybe 80k delta miles as well. I tried AA and it says I need to call. For, delta, it needs a lot of miles. I am wondering if I just need to call AA, and what are the things I should do to prepare? thanks!