answer: #Person2#'s waiting for someone to put gas in his car but he's told by #Person1# that it's a self-service pump. #Person1# tells #Person2# to look at the sign if he wants a full-service gas station next time.
documents: #Person1#: Can I help you, sir?
  #Person2#: Yes, I've been sitting here for a few minutes. I'm waiting for someone to put gas in my car.
  #Person1#: I'm sorry, sir. But this is the self-service pump.
  #Person2#: Self-service?
  #Person1#: Yes. You must fill up the car yourself.
  #Person2#: Are you serious?
  #Person1#: Yes. Are you traveling here?
  #Person2#: Yes, I'm from Taiwan. I never heard of a gas station where you fill up your own car.
  #Person1#: In America, most gas stations are like this.
  #Person2#: Do I really have to do it? I don't know how.
  #Person1#: Well, since this is your first time, I will do it for you. But next time, if you want a full-service gas station, you should look at the sign.
  #Person2#: What sign?
  #Person1#: Under the sign for the gas station, there will be a smaller sign that says Self-Service or Full-Service. And some gas stations have both. But if they have both, some pumps will be self-service and some will be full-serve. You have to look at the signs.
  #Person2#: I see.