answer: #Person2# tells #Person1# the warranty is two-year, all repairs are billed at cost and they supply spare parts.
documents: #Person1#: How long is the warranty?
  #Person2#: We guarantee our product for two years.
  #Person1#: How about the repairs after the warranty expire? Are you responsible for the fixing if the machine breaks down after the warranty period?
  #Person2#: Yes. All repairs are billed at cost. We'll only bill you for parts. The on-site service is $ 300 a year after the warranty.
  #Person1#: Will you supply spare parts if we want them?
  #Person2#: Certainly. We always have the interest of the customers at heart.