Query: user: Would you find me a train?
assistant: What date would you like to travel on and what city are you leaving from?
user: Find tickets for 7th of March from San Diego.
assistant: What city will you go to?
user: I'm going to LAX.
assistant: The flight will leave at 6:10 am and costs $56.
user: Do you have any other trains that will work?
assistant: How about one that leaves at 6:40 am and costs $52?
user: Sounds good. Book me the train tickets.

Intent: Trains:GetTrainTickets