Query: user: I need help finding a train.
assistant: What city is your point of departure and what is your destination? What is the date that you are wanting to travel?
user: I am going to Portland, OR and would like tickets for 13th of March. I am leaving from Vancouver, BC.
assistant: I see 8 trains that work for this. One leaves at 6:50 am and the price is $83 total.
user: Which station will this train end up at?
assistant: The train will end up at Union Station.
user: That sounds fine. I would like to book tickets for this train. I need one seat that is conditionally refundable.

Intent: Trains:GetTrainTickets