answer: #Person1# helps #Person2# to fix breaks. #Person1# says it will take about half an hour.
documents: #Person1#: Can I help you?
  #Person2#: Yes, my brakes are not working well.
  #Person1#: What's wrong with them?
  #Person2#: I hear a noise and feel vibrations when step on the brake.
  #Person1#: The front brake?
  #Person2#: I think so.
  #Person1#: What kind of car is it?
  #Person2#: Toyota Corolla 2002.
  #Person1#: Write down your name and address, give me the key, and I will check it out.
  #Person2#: Do you charge for checking it out?
  #Person1#: No.
  #Person2#: How long is it going to take?
  #Person1#: About half an hour.
  #Person2#: I'll wait.