Query: user: I need a train.
assistant: Which cities will you leave and go to? What date will you travel?
user: I'm headed to Sacramento, Ca to San Diego on the 7th of this month.
assistant: You can go at 6:10 am for $148.
user: What station is it from?
assistant: It departs from Santa Fe Depot.
user: Aren't there later trains? I need two seats.

Intent: Trains:FindTrains