Query: user: I'm planning a short trip, can you help me buy plane tickets?
assistant: What is the date and time you'd like to depart and return? Do you have any preference of airline?
user: Yeah I prefer Delta Airlines and I plan to leave around a quarter to 1 in the afternoon. I'd like my return flight to be around 12:30.
assistant: What date are you planning on departing and returning on, and from where?
user: Oh, I'm leaving on the 1st of this month from Vegas. I'd like to come back on sunday this week.
assistant: Where are you planning to go?
user: I'd like to go to Vancouver, BC.

Intent: Flights:ReserveRoundtripFlights