Query: user: I need a train from SF.
assistant: When will you be leaving?
user: I want Flexible tickets on the 9th please.
assistant: Which city will you go to?
user: Sacramento, CA is my destination.
assistant: How about a 6:10 am train that costs $69?
user: Are there any other trains from Los Angeles for 1.
assistant: There are 5 trains, how about the $109 at 9:20 am?
user: Which station does it leave from? Which does it arrive at?

Intent: Trains:FindTrains