Query: user: Can you find round trip flights for me? I'd like to travel Economy leaving from San Fran.
assistant: When will you be coming back?
user: I would like to get back on the 12th.
assistant: When and where are you leaving from and visiting?
user: I would like to travel to Delhi leaving Friday next week.
assistant: I see 2 convenient flights including American Airlines outbound leaving 1:15 pm and returning 9:20 am for $362.
user: Do you see other available flights for three people?
assistant: I see 1 convenient flight with United Airlines leaving 11:55 am and returning 1:10 am for $401.
user: The flight sounds nice. Can you assist me for buying flight tickets?

Intent: Flights:ReserveRoundtripFlights