Query: user: I'm looking for 1 flexible train ticket to Sacramento, CA.
assistant: When is the ticket for?
user: It's for Wednesday next week.
assistant: And where will you be departing from?
user: I'll be departing from San Francisco.
assistant: There's a $67 train at 6:10 am.
user: What's the station it departs from?
assistant: The station is Salesforce Transit Center.
user: And what's the arrival station?
assistant: The arrival station is Sacramento Valley Station.
user: Okay, good, I want to purchase a ticket.

Intent: Trains:GetTrainTickets