Delta uses an interview process called the S.T.A.R. interview. All questions asked must be answered in this format for the answer to be considered complete. This stands for Situation Task Action Response. This is true for phone interviews, 1:1 interviews, panel interviews, etc. Think up situations before the interview so you have them ready. This gives you the opportunity to give your best examples, not just the ones you thought of at that moment while under pressure.