Query: user: I'd like train tickets for next Thursday. I'll be going to San Diego.
assistant: Where are you coming from?
user: I'm coming from Phoenix, AZ. I'll need 3 tickets.
assistant: I've found 5 trains. One's departing at 8:30 am and costs $199.
user: That's a good one. That's all.

Intent: Trains:FindTrains