Query: user: Can you find one-way flight tickets?
assistant: Where are you going? Where do you plan to leave from?
user: I am leaving from Los Angeles and going to London.
assistant: When do you want to leave?
user: I am going on March 14th.
assistant: I found 4 flights for you. One is an Alaska Airlines flight. It leaves at 9:30 am and has 1 stop. A ticket costs $444.
user: What else is available? I only want 1 ticket. I am going on the 11th of this month.
assistant: There is an American Airlines flight that leaves at 8:30 am and has 1 stop. A ticket costs $372.
user: Are there other flights? I am departing from Chicago.
assistant: There is a Delta Airlines flight that leaves at 11:05 am and has 1 stop. A ticket is $339.
user: Where does the flight arrive?
assistant: The destination airport is Heathrow International Airport.
user: Where does it depart from?
assistant: O'hare International Airport.
user: Sounds great.
assistant: Do you want tickets?
user: No thanks. Can you find round trip flights?
assistant: When are you returning?
user: The 13th.
assistant: I found 1 flight for you. It is a Delta Airlines flight and leaves at 11:05 am. The return flight leaves at 8 am. It costs $294
user: Where does it depart from?
assistant: O'Hare International Airport.
user: Where does it arrive?
assistant: Heathrow International Airport
user: Sounds great.
assistant: Should I buy tickets?
user: Yes, book 1 Economy ticket please.

Intent: Flights:ReserveRoundtripFlights