Query: user: My friend and I are going on a spontaneous trip! Can you book two tickets from Vancouver, BC for us?
assistant: Sure, where are you going?
user: We're going to go to Las Vegas.
assistant: Ok, and when are you leaving?
user: We want to leave on the 2nd of March.
assistant: Ok, I found 2 options. There's an Air Canada flight with 1 stop for $224 that leaves at 4:45 pm. How about that?
user: What else is there? And just Economy seats please.
assistant: I also found a Delta Airlines flight with 1 stop for $202 that leaves at 12:20 pm.
user: When does that one arrive at the destination?
assistant: It would arrive t 9:35 pm.
user: And which airport does it fly to?
assistant: It goes to McCarran International Airport.
user: What else is there? We'd be ok with upgrading to Premium economy.
assistant: Ok, I found 1 option. There's a United Airlines flight with 1 stop for $348 that leaves at 6:05 pm. How about that one?
user: That one sounds good. Can you book the flight for me?

Intent: Flights:ReserveOnewayFlight