answer: #Person2# asks the operator to make a collect call.
documents: #Person1#: Operator, can I help you?
  #Person2#: Yes. I'd like to make a collect call. My number is 7683384.
  #Person1#: And the number you're dialing?
  #Person2#: That's 7638558. Oh, no, I'm sorry, I forgot it's just changed. It's now 7643388.
  #Person1#: Please hold the line, caller.