Query: user: I need a one-way flight.
assistant: What is the departure city and the arrival city, and for what date?
user: I will be going to Seattle, WA and I want to leave next Wednesday.
assistant: And what is the departure city?
user: I will be leaving from San Fran and I want to travel in Economy.
assistant: There is an Alaska Airlines flight from San Francisco to Seattle that departs at 2:55 pm with 0 stops. The price of the one-way ticket is $119.
user: How about the same day from San Francisco to London, England?
assistant: There is an American Airlines flight that departs San Francisco at 7:05 am to London, England with 1 stop. The price of the economy ticket is $395.
user: When does that flight arrive in London? And did you say it departs from San Francisco?
assistant: The flight arrives in London at 6:37 am. The flight departs from SFO International Airport.
user: Are there any other flights? Maybe something that departs a little later in the morning?
assistant: Delta Airlines has a flight that departs at 10:05 am. It has 1 stop. The price of the economy ticket is $370.
user: Yeah, that sounds good. I want to purchase that one-way ticket to London, England.

Intent: Flights:ReserveOnewayFlight