answer: #Person1# helps Li Gang book a double room from August 5th to 8th. They need a 10% margin to confirm. Li Gang will pay it on the Internet.
documents: #Person1#: Beijing Hotel. May I help you?
  #Person2#: Yes. I'd like to book a double room with bath.
  #Person1#: For what time, sir?
  #Person2#: I plan to arrive on August fifth and leave on August eighth.
  #Person1#: From August fifth to eighth. Just a moment. Yes, we have a vacancy for that period. What's your name, please?
  #Person2#: Li Gang.
  #Person1#: That's OK, Mr. Li, a double room with bath from the fifth of August to the eighth.
  #Person2#: That's right.
  #Person1#: By the way, how do you like to pay for it? This hotel prefers cash.
  #Person2#: I see. When can I receive your confirmation?
  #Person1#: Not until you have paid 10 percent margin.
  #Person2#: I'll log in to the Internet to know about you. I know your address.
  #Person1#: Thank you. Bye.