answer: #Person2# suggests #Person1# taking the subway because it's quicker and more convenient than taking the bus. Then #Person2# tells #Person1# about the fare of the subway.
documents: #Person1#: Let's go to the cinema by bus.
  #Person2#: Better take the subway. It's far quicker and more convenient.
  #Person1#: OK, it will be a new experience for me.
  #Person2#: We have a rather comprehensive subway system here. You can get almost anywhere rather quickly on a subway, especially at this time of day when the traffic is heavy.
  #Person1#: Where do we pay the fare?
  #Person2#: Just give the man sitting there three yuan and he'll give you a ticket.
  #Person1#: Do I have to pay an additional fare to change trains?
  #Person2#: No, you don't have to. Here comes the train. Be careful! Subway doors open and close automatically.