Amazon has everything, it seems. I buy ebooks and magazines for my kindle and I send books to friends. Recommended! Also international deliveries work well.
I needed to get orbitz to arrange. They only mentioned " we cannot do that " whereas they should inform the carrier. Only after a twitterfest and tweets to every party I could think of, I was helped by Delta customer service. Thanks, orbitz! (Not).
However they had the best price for the ticket, hence the 2 stars