Query: user: I need a train ticket to ATL from Philadelphia.
assistant: What date will you be travelling?
user: I will be travelling on the 2nd of March.
assistant: There's a train at 9:20 am for $173. How does that sound?
user: What's the departure station?
assistant: The departure station is 30th Street Station.
user: And what's the arrival station?

Intent: Trains:FindTrains