answer: #Person2# phones Room Service because the heating system in #Person2#'s room doesn't work. #Person1#'ll send their staff to fix it now.
documents: #Person1#: Room Service. May I help you?
  #Person2#: This is Room 603. I'm afraid that the heating system doesn't work. It's very cold here.
  #Person1#: Have you switched on the radiator?
  #Person2#: Yes. I have switched it on for a long time. The room is still very cold.
  #Person1#: We're terribly sorry for that. We'll send our staff io fix it now. Or do you want to change your room?
  #Person2#: I prefer not to move first.
  #Person1#: OK. Is it convenient for us to come now?
  #Person2#: Yes, please.