answer: #Person2# checks the bus ticket to Boston for #Person1# and #Person1# buys one.
documents: #Person1#: Excuse me, What time does the next bus for Boston leave?
  #Person2#: It leaves at 8 o' clock.
  #Person1#: I see. Are there any seat available?
  #Person2#: Just a moment please. Yes. You can have a seat.
  #Person1#: Good. How much is it when we take it?
  #Person2#: It thirty eight dollars.
  #Person1#: All right. Here's forty dollars.
  #Person2#: Here's your ticket and change.
  #Person1#: Thank you. Which gate should I go to for the bus?
  #Person2#: Go to gate No. 2, please.
  #Person1#: Thank you very much.
  #Person2#: Don't mention it.