Query: user: Can you find me some one-way flights?
assistant: Yes, I can help you with that. I need your departure and arrival cities, as well as the dates.
user: I am going from Seattle, WA to SF on the 10th.
assistant: I found you a flight on Alaska Airlines. It has 0 stops and departs at 12 pm. The ticket price is $106.
user: I prefer United Airlines. Do you have any other flights?
assistant: I found you 1 flight on United Airlines that leaves at 8:30 pm. There are 0 stops and the ticket costs $97.
user: That flight sounds good to me. Are there any round trip flights available?
assistant: When is your departure date?
user: I want to get back on the 12th, preferably.

Intent: Flights:SearchRoundtripFlights