Query: user: I'm thinking of going on a trip. Can you help me search for Flexible tickets for a bus?
assistant: Where are you leaving from?
user: From Los Angeles.
assistant: And what's the destination? Do you know what time you would like to go?
user: It's 2 people. I plan to leave from Vancouver to Portland, OR on March 1st.
assistant: The bus leaves at 9:20 am and the ticket costs $62. It is a Flexible ticket.
user: Which station will I be leaving from and in which will it arrive?
assistant: You will be leaving from the Pacific Central Station to the Portland Bus Station.
user: Are there any other buses abailable?
assistant: There's a Flexible one that leaves at 9:30 am and the ticket costs $56.
user: Thanks, that's all I need.

Intent: Buses:FindBus