dialogue: #Person1#: Excuse me, could you tell me which bus I should take to go to the railway station?
  #Person2#: I think you'd better take the No. 16 bus. It can take you right there.
  #Person1#: How often dose this bus go there?
  #Person2#: Every fifteen minutes.
  #Person1#: I really can't wait that long. Are there any other buses that can take me there?
  #Person2#: The No. 2 bus also goes to the railway station. You may take it.
  #Person1#: Where can I find the bus?
  #Person2#: The bus stop is not far from here. Go straight on and you can easily find it.
  #Person1#: Thanks a lot.
  #Person2#: You are welcome.
summary: #Person2# tells #Person1# the No. 16 bus goes to the railway station, but the interval is too long that #Person1# can't wait, so #Person2# suggests the No. 2 bus.
topic: bus