answer: Mr. Black books a conference room for a business meeting tomorrow morning at the cost of 90 RMB per hour with #Person1#'s assistance.
documents: #Person1#: Good morning, sir. May I help you?
  #Person2#: Yes, would you please find a room for our business meeting?
  #Person1#: Certainly, sir. How many people do you have?
  #Person2#: Well, about 10.
  #Person1#: Fine. We have a conference room which can seat up to 20 people.
  #Person2#: That's great. What about the charge?
  #Person1#: It is 90 RMB per hour. There is no minimum charge. Do you want to book it?
  #Person2#: Yes, I think so.
  #Person1#: May I have your name and room number, please, sir?
  #Person2#: Mr. Black, Room 1208.
  #Person1#: Thank you, Mr. Black. How long will you be using the conference room?
  #Person2#: We'll start at 10 o'clock tomorrow morning but I'm not sure when we'll finish.
  #Person1#: No problem, Mr. Black. The room will be at your disposal then.