answer: Brown calls Miss Li for signing the contract this evening. And Brown's manager invites Li for dinner so that they'll sign the contract before dinner.
documents: #Person1#: Hello, Silk Branch, Who is calling?
  #Person2#: This is Brown speaking. May I speak to Miss Li?
  #Person1#: Speaking, please. This is Li.
  #Person2#: Good afternoon, Miss Li.
  #Person1#: Good afternoon.
  #Person2#: Have you got the contract ready for signature?
  #Person1#: Yes, I have. I gave you a ring just now, but you were not in
  #Person2#: How about this evening? Will you be free then? Our manager invites you to dinner this evening. We can sign the contract before the dinner.
  #Person1#: That's very kind of you. I'll be very pleased to be with you for the dinner. When shall we meet?
  #Person2#: Please wait at the hotel. We'll come and pick you up at half past six. Then, we'll drive to the Capital Restaurant. It's only a ten - minute ride from your hotel. Is it convenient for you?
  #Person1#: That's great! See you at six thirty.
  #Person2#: See you soon.