answer: #Person1# brings Mr. Green's food to his room and tells him to leave the plates outside the door after eating.
documents: #Person1#: Room service. May I come in?
  #Person2#: Come in please.
  #Person1#: Mr. Green?
  #Person2#: Yes. Put them on there please.
  #Person1#: OK. If you need anything, just call the Room service.
  #Person2#: Thank you. By the way, what shall we do with the plates when we finish our meal?
  #Person1#: Just leave them outside the door. We will take care of it.
  #Person2#: I see. Thanks a lot.