Query: user: Can you find me a flight that returns on the 10th?
assistant: When and from where do you want to depart? Do you have an airline preference, perhaps Air Canada or American Airlines?
user: I need tickets for 2 on Delta Airlines at eight pm from SF.
assistant: What is your destination? What time would you like to depart?
user: I would like to depart at 10 in the night to Portland.
assistant: When will you be leaving?
user: I will be leaving on March 3rd.

Intent: Flights:ReserveRoundtripFlights