answer: #Person2# is asking #Person1# about the price of a trip to Europe.
documents: #Person1#: Is there anything I can do for you?
  #Person2#: I'm planning a trip to Europe.
  #Person1#: Have you decided which city you want to go?
  #Person2#: Well, what's the price of this route?
  #Person1#: That's $ 400 and we will visit 4 cities.