Query: user: i am looking for Economy class flights?
assistant: Where do you plan to visit?
user: I am traveling to Portland.
assistant: When do you plan to return and leave?
user: I am leaving on the 7th and returning of 10th of this month.
assistant: From where are you leaving?
user: i am leaving from Vancouver, BC and would prefer United Airlines.
assistant: United Airlines flight is available and leaves at 6:05 pm. The return flight leaves at 10:35 am and which costs $233
user: When will my return flight arrives?

Intent: Flights:SearchRoundtripFlights