Query: user: Search for a train for me.
assistant: What city shall I search in?
user: I need any type of train ticket to get to Portland.
assistant: What is your departure city?
user: I am departing out of Vancouver.
assistant: What is your travel date?
user: I am departing on the 11th.
assistant: There is a train leaving at 6:50 am. It costs $81 and is 1 of 8 search results.
user: That is perfect. Get me a train ticket.

Intent: Trains:GetTrainTickets