Query: user: I'm looking for an economy flight to Portland. I need to leave about half past 8 in the morning for the return flight.
assistant: Sure, when will you be returning?
user: I hope to fly back on the 8th of March.
assistant: Alright, what time do you want to leave on your flight to Portland?
user: It doesn't matter that much, but around 11:45 would work.
assistant: OK, Alaska Airlines and United Airlines have flights to Portland. Or I can see if another airline has a flight there. Do you have a preference.
user: Let's try Alaska Airlines. I need to leave on Saturday this week.
assistant: What city will you be departing from?
user: I need to find a flight from SFO.

Intent: Flights:ReserveRoundtripFlights