answer: #Person2# orders a beer. #Person1# tells #Person2# all the drinks are free, so #Person2# asks for more beer.
documents: #Person1#: Excuse me, would you like a drink before your meal? 
  #Person2#: Pardon me? 
  #Person1#: Would you like a drink? 
  #Person2#: Oh, I see. I'll have a beer please 
  #Person1#: Ok, here you are. 
  #Person2#: Thank you. How much is it? 
  #Person1#: Well, all the drinks including beer are free of charge. 
  #Person2#: Are you sure? Then I'd love more beer please.
  #Person1#: Don't worry. It would be back again a little later.
  #Person2#: Okay, thank you.
  #Person1#: Are you finished?
  #Person2#: Yes, may I have some more beer?
  #Person1#: Oh, sure. I'll be back in a minute.