answer: #Person2# called for a plumber, so #Person1# comes to #Person2#'s house and finds the toilet is clogged. #Person1# suggests changing the water pipes and gives the price.
documents: #Person1#: Good afternoon! Did you call for a plumber? 
  #Person2#: Yes, yes I did. Please come in! I'm so glad you came! This old house is falling apart! Come on into the 
  #Person1#: I see. Let me have a look. It seems that your toilet is clogged, and that's why it won't flush. Let me just get
  #Person2#: Oh, that must be because of my four-year-old daughter. She is always flushing things down the toilet. You know 
  #Person1#: Yeah, I have a little one myself. Anyway, these water pipes are really rusty, so they also should be changed. That 
  #Person2#: That would be great! Is it expensive? 
  #Person1#: Let's see. . . I would say about eight hundred dollars.