Query: user: I want to book a one way flight.
assistant: Which place would you like to travel and on which date?
user: I would like to travel to Las Vegas on 11th of this month and want 2 tickets.
assistant: From which city would you like to depart?
user: I am looking for flights from SD.
assistant: There are 4 flights available. One is Alaska airlines which takes off at 10:45 pm and has 0 stops. It will cost you $78.
user: Ok. Can you please help me in searching a bus on the 8th?
assistant: There is 1 bus. It departs at 6:50 pm and it will cost you $40. It has 0 transfers.
user: That's perfect. I want to reserve seats in bus

Intent: Buses:BuyBusTicket