answer: Mary doesn't feel well because it is her first time flying. Frank tells her there's an airsickness bag behind the seat.
documents: #Person1#: Excuse me, but I'm not feeling too well. I think I'm going to throw up.
  #Person2#: There's an airsickness bag behind the seat that's in front of you.
  #Person1#: I must've missed it.
  #Person2#: Is this your first time flying?
  #Person1#: Yes. I'm going to San Francisco.
  #Person2#: Oh, it's a beautiful city. I think you'll like it.
  #Person1#: Hey, I'm feeling much better already.
  #Person2#: Sometimes if you don't think about it, that sick feeling will go away on its own.
  #Person1#: Thanks. By the way, my name is Mary.
  #Person2#: I'm Frank. Nice to meet you.