Well first I pick myself to pieces..wondering what is wrong with me...then I convince myself it is their loss..then I work on my new strategy for next time..not letting them get the better of me or destroy my dream....than I go in full attack next time...and low and behold..end up with 3 offers!!!
Dont ever let the no get the better of you...learn from it...evaluate what you could have done better and know practise makes perfect and when the timing is right it will happen.
Once you have done a couple of airline interviews you relax that little bit more the next time round...your extectations arent so high and you know all the questions they are going to ask.
A few cursing words - to get it out of your system, pampering yourself afterwards works wonders..and a few drinksreally with your best buddies cheers you up too.
All the best....