Query: user: I would like to buy a train ticket.
assistant: Which date would you like to travel and where are you traveling?
user: I'm going to San Diego on the 14th of this month.
assistant: Which city are you departing from?
user: I'm departing from Sacramento.
assistant: There is a train departing at 6:30 am for $155.
user: Which station does it leave from and arrive at?

Intent: Trains:FindTrains