Query: user: Would you find me one way flights? I want to go to Los Angeles from Vancouver BC. I will be traveling in Premium Economy.
assistant: When will you leave?
user: I want to leave today.
assistant: I have 3 flights that you should like. I have an Air Canada flight. The outbound flight leaves at 4:45 pm and has 0 stops. This ticket costs $236.
user: Are any other flights available?
assistant: There is an American Airlines flight which leaves at 11 pm and has 0 stops. This ticket costs $223.
user: Do you have anything else available? I will leave from Las Vegas.
assistant: I have 3 flights that should be good. How about a Delta Airlines flight that leaves at 9 pm with 0 stops? This flight costs $120.
user: Sounds great. Would you help buying a one way flight ticket? I could have a change of plans so I need refundable tickets. There are two in my group.
assistant: Could you confirm that you are leaving from Las Vegas and going to Los Angeles on Delta Airlines? You will depart on March 1st and have 2 people in your group and will fly premium economy.
user: Sounds good to me.

Intent: Flights:ReserveOnewayFlight