answer: #Person2# wants to fill the new car with some gas. #Person1# recommends premium gasoline and helps #Person2# fill it up.
documents: #Person1#: Can I help you, sir?
  #Person2#: Yes. Fill it up, please.
  #Person1#: OK. What kind of gas do you want?
  #Person2#: I don't really know. I have just bought this new car. And it's the first time I've gotten gas for it.
  #Person1#: We have regular, super, and premium gasoline. This is a new car, so I'd recommend premium.
  #Person2#: Premium, please. Thanks. Please fill it up.
  #Person1#: All right, sir. You will park at refueling 4.
  #Person2#: OK, thanks.
  #Person1#: Your car's ready.
  #Person2#: Good. How much does it come to?
  #Person1#: Ten gallons of premium. That's $ 18. 56, please.
  #Person2#: OK. Here you are.
  #Person1#: Thank you, sir. Have a nice drive!