answer: #Person2# buys a round trip air ticket to New York with #Person1#'s assistance.
documents: #Person1#: Next please. Hello. How can I help you?
  #Person2#: I'd like to buy a ticket for New York.
  #Person1#: Would you like one way or round trip?
  #Person2#: Round trip.
  #Person1#: When will you be leaving?
  #Person2#: When does the next plane leave?
  #Person1#: In about 2 hours.
  #Person2#: I'd like a ticket for that flight please.
  #Person1#: First class or coach?
  #Person2#: Coach.
  #Person1#: OK, let me check availability. I'm sorry. Tickets for that flight are sold out.
  #Person2#: How about the one after that?
  #Person1#: Let me see. Yes, that one still has seats available. Would you like me to reserve a seat for you?
  #Person2#: Yes, please.
  #Person1#: That'll be 120 dollars.
  #Person2#: OK.
  #Person1#: Thank you, here's your change.