answer: #Person2# realizes the rate between Australian dollars and RMB goes down, but #Person1# says it won't change much tomorrow. #Person1# decides to change 1000 Australian dollars for RIB.
documents: #Person1#: Good Morning, sir. What can I do for you?
  #Person2#: Yes, I'd like to change Australian dollars for RIB.
  #Person1#: How much do you want to change?
  #Person2#: I am not sure. What's the rate today?
  #Person1#: It's 1 Australian dollar to 6. 1 Yuan RIB.
  #Person2#: What was the rate yesterday?
  #Person1#: The rate was 1 Australia dollar to 6. 5 Yuan yesterday.
  #Person2#: Oh, the rate goes down.
  #Person1#: It does, sir. Do you still want to have it changed now?
  #Person2#: Let me think. . . Will the rate still go down tomorrow?
  #Person1#: I don't know, sir. But it won't change much.
  #Person2#: Well, I want to change 1000 Australian dollars for RIB.
  #Person1#: Okay. Please sign here in this form.
  #Person2#: OK.
  #Person1#: Here is the 6, 100 RIB.
  #Person2#: Thank you very much.