Query: user: Hi, could you help me search for some round trips to San Francisco? I do not have a preference on the class type.
assistant: Sure, where do you intend to depart and when is your intended period of travel?
user: I will be travelling from the 6th of this month till next Friday from Phoenix.
assistant: Sure, there are 4 available flights, one of which is an American Airlines flight which departs at 7:35 am and returns at 8:10 am which will cost you $203.
user: May I know which airport will I be departing from?
assistant: You will depart from Sky Harbor International Airport.
user: Are there zero layovers for this flight?
assistant: This flight has 1 layover.
user: Are there any available flights then?
assistant: There is also a Delta Airlines flight which departs at 11:55 am and returns at 5:50 am costing $126.
user: I see, this sounds good to me!
assistant: Would you like me to make a reservation for you?
user: Yes please do so.
assistant: Please confirm your purchase of 1 return tickets on the Economy Delta Airlines flight from Phoenix to San Francisco, departing on March 6th at 11:55 am and returning on March 8th at 5:50 am.
user: That sounds great! Is this a refundabe ticket?

Intent: Flights:ReserveRoundtripFlights