Query: user: I'll be going on a trip soon. Can you book flight tickets for me? I'm hoping to leave around 14:30.
assistant: No problem. Where to and from, and what day do you want to leave?
user: I'm going from NY to San Francisco and leaving on Saturday this week. Any ticket in Economy class is fine.
assistant: What are your preferred airlines?
user: I usually fly Delta Airlines.

Intent: Flights:ReserveRoundtripFlights