Convince us that you want to work for us. No airline wants to waste time or money recruiting and training a pilot that is not going to stick around for some period of time. If/when you get the interview you need to be able to explain your answer satisfactorily. Don't say you have always wanted to work for airline X because ______(fill in the blank) and then be unable to talk about airline X in some detail when asked what you know about it.
Jim