Query: user: I'm looking for a car to rent.
assistant: When are you planning to pick up the car and on what date? And how long do you need it?
user: I'd like to do a 4:30 PM pickup in Las Vegas and I need a car until March 14th.
assistant: Starting on what date?
user: Next Tuesday until next Thursday. Can I pick it up in Philly?
assistant: There are 8 possible cars for you. I have a standard Altima which can be picked up on March 5th at 30th Street Station.
user: All right, thank you.
assistant: Shall I reserve that for you?
user: Not yet, thank you.
assistant: What else may I help you with?
user: I would also like an economy bus ticket on the 1st of March from Washington.
assistant: There is a 7:10 AM bus for that has a $30 economy ticket.
user: Where does it depart from and where does it go to?
assistant: It travels from Union Station to Intercity Terminal.
user: What else do you have?
assistant: I have one at 7:50 AM for a $27 economy ticket.
user: Is there anything else?
assistant: There is also an 8:40 AM departure for a $27 economy ticket.
user: Okay, thank you. I also need a roundtrip flight.
assistant: Are you looking for a March 5th or March 1st departure ending March 7th return?
user: I'd like to leave on the 1st of March and come back on the 12th of this month.

Intent: Flights:SearchRoundtripFlights