Hi NTCSavage, just a littel note to say definitely don't give up. You are obviously doing partly the right thing as you have got through to some interviews. Well done for that. Airline interviews aren't the easiest things to go through. I know how stressful they are. Just a few pointers:
1)Always use the candidates names eg: "thats a good idea Jodie"
They like that. It shows you are taking note of other people around you.
2)Talk to people. Start conversations eg: "So where have you travelled from? Oh fantastic, I've been there (even if you haven't, say you've heard it's lovely) it's lovely".
3)Try to show a genunie interest in people
4)When involved in group exercises always comment on other candidates ideas positively eg: "Great idea Bob, how does that sound to everybody?"
Have you tried BA, Virgin, Easyjet? I will say that Ryanair is apparantly very easy to get in to. However, you will have to pay for everything, even the training according to a friend of mine. Good luck and let us all know how it goes.