Query: user: Hi, could you get me a bus departing on the 2nd of March?
assistant: Where are you departing from and heading to?
user: I will be travelling from San Diego to SFO.
assistant: Sure, there are 6 buses you may like, how about one departing at 6:30 am and costing $49?
user: May I know where will I be departing from?
assistant: This departs from the El Cajon Bus Stop.
user: I see, sounds great!
assistant: Do you need me to purchase the tickets for you?
user: Yes please, for one person will do.
assistant: Please confirm your purchase for 1 seat on the bus ride from San Diego to San Francisco on March 2nd at 6:30 am.
user: Sorry, could I get the tickets for 4 instead?
assistant: No worries, please confirm your booking for 4 seats for the bus departing on March 2nd.
user: Could you add on excess luggage for me please?

Intent: Buses:BuyBusTicket