answer: #Person2# phones the China Telephone Company to complain that her bill last month was unreasonably high. #Person1# checks the account and reminds #Person2# of the international calls she made to Europe. #Person2# recognizes her mistake. #Person1# recommends the international dial service.
documents: #Person1#: Hello. This is the China Telephone Company. What can I do for you?
  #Person2#: Is this the Complaints Department?
  #Person1#: Yes, it is.
  #Person2#: I want to complain about the bill I received this month. I don't think I've made that many phone calls. Have their rates gone up? There must be a mistake in your billing.
  #Person1#: Alright Madam, tell me your phone number and I'll check it for you.
  #Person2#: My number is 63513516.
  #Person1#: Thank you. Please hold on for a moment.
  #Person2#: Alright.
  #Person1#: Hello?
  #Person2#: Yes, I'm still here.
  #Person1#: Well, there doesn't seem to be any problems with your account. The billing is accurate. You must have overlooked the international call you made to Europe.
  #Person2#: Let me see. Right. I'm sorry, it's my mistake. But it is still very expensive.
  #Person1#: Well, why don't you apply for the international dial service? It's free of charge.
  #Person2#: Can I do that?
  #Person1#: Sure. You can. The rates are cheaper as you do without assistance from the operator.
  #Person2#: I see. Well, thank you very much and I'm sorry for bothering you.
  #Person1#: It's no bother at all. That's what we're here for. Thanks for calling.