Query: user: I need a bus for 2.
assistant: Where do you want to go and leave from? When are you leaving from?
user: I will leave from Fresno on the 9th of this month and would like to go to Vegas.
assistant: What time will you leave?
user: I want to leave at 12:30.
assistant: Could you confirm that you want to book a ticket from Fresno to Las Vegas on March 9th at 12:30 pm for 2?
user: No, I will leave from San Francisco at afternoon 12.
assistant: Could you confirm that you want to get a ticket on the bus from San Francisco that leaves at 12 pm?
user: Sounds good.
assistant: Sorry, I was unable to purchase the ticket. Could I help with something else?
user: Would you try it again? It's for 3 and I will leave on March 1st.

Intent: Buses:BuyBusTicket