answer: #Person2#'s flying home but #Person2# doesn't fly often for #Person2#'s job. #Person2# tells #Person1# it will be a long flight and #Person2# tends to stay up late the day before and sleep on the plane.
documents: #Person1#: So, you're going back to the United States tomorrow.
  #Person2#: Yes, that's correct. I'm flying home.
  #Person1#: I'm afraid of flying, are you?
  #Person2#: No, flying is fine with me.
  #Person1#: That's great. Er, back home, do you fly quite often for your job?
  #Person2#: No, I go to the work by bus and drive to different business appointments, but sometimes I take the train to go to the business conferences in other cities or things like that.
  #Person1#: I see. So tomorrow you will have a really long flight.
  #Person2#: Yes, terribly long.
  #Person1#: It's probably 15 or 16 hours, I suppose.
  #Person2#: Mmm, from Shanghai to Boston, mmm, let me see, it is about 18 hours in the air.
  #Person1#: So how do you pass the time on the plane?
  #Person2#: I like to sleep as much as possible.
  #Person1#: OK, do you take medicine or just have a beer or...?
  #Person2#: No, no, I don't take any medicine. I tend to stay up late the day before, so that I'm tired and I want a sleep on the plane.
  #Person1#: That's a good idea. And I hope you have a good flight.
  #Person2#: Thank you very much.