My advice to you is to "Just Be Yourself". Be honest and sincere with your questions and you will do just fine. The exception to this rule is, if your Arse in the first place, this strategy wont work for you.

When being hired by an airline they are trying to avoid hiring problems. Dont be that guy that nobody wants to fly with. I have flown with my fair share. They try to hire people that they dont mind sitting in a cockpit with for 8 to 10 hours a day.