Query: user: I'm looking for a one-way flight to depart next Thursday. Please search for economy class tickets.
assistant: I can help you with that. Where are you leaving from, and what's your destination?
user: I am looking for flights from Washington to San Francisco.
assistant: I have a flight on American Airlines for $294, leaving at 9:45 am. That flight has 1 stop.
user: Which airport does it leave from, and where does it land?
assistant: That flight leaves from Dulles International Airport, and arrives at SFO International Airport.
user: That's not really what I want. Please find something else.
assistant: I have a flight on Southwest Airlines for $280. It takes off at 3:50 pm and also has 1 stop.
user: No, I want something else please.
assistant: There are seats available on a United Airlines flight that takes off at 8 am. That one is $292 and also has 1 stop.
user: I would like a round trip for that.
assistant: Okay, on what day would you return?
user: I will return on the 9th of this month.
assistant: I have 1 flight available on United Airlines for $298, taking off at 8 am. The return flight will depart at 5:50 am.
user: OK, thanks.

Intent: Flights:SearchRoundtripFlights