Query: user: Find me a train please.
assistant: In what date you want to travel and from what city?In which city you go?
user: I want tickets from Los Angeles to San Diego on 11th of March.
assistant: What you think about the train that depart at 6:50 am and cost $54 in total?
user: Something else you have for me.I need 4 seats and I don't have preferences about the fare class.
assistant: What about the train that depart at 8:10 am and cost $172 in total?
user: From which station will leave?
assistant: From Union Station will leave.
user: Other train that could work you have?I would like Value tickets.
assistant: 2 trains I have for you.What you think about a train that depart at 12:40 pm and cost $174 in total.
user: Sounds very good.Book for me tickets.

Intent: Trains:GetTrainTickets