Query: user: I am interested in having Economy tickets for three people for a one-way flight.
assistant: Can you tell me where you want to go, and when are you planning to leave? Which is the location from where you will leave?
user: I will be departing from Seattle, WA on the 12th to go to Vegas.
assistant: There is a Delta Airlines flight which has 1 stop and leaves at 7:45 am. The ticket for this flight costs $225.
user: This flight seems as what I want. Can you help me book the flight tickets for the one-way flight?

Intent: Flights:ReserveOnewayFlight