Query: user: I need to buy four bus tickets to Vegas.
assistant: What date are you leaving?
user: I'm planning to leave on the 12th of March.
assistant: What city are you leaving from and what time do you want to depart?
user: I'm leaving from Fresno and I want to leave at 15:15.
assistant: Okay, I have 4 economy bus tickets from Fresno to Las Vegas leaving at 3:15 pm on March 12th, correct?
user: Yes, that is correct.
assistant: Sorry, I couldn't purchase those tickets. Does the bus leaving at 3 pm for $41 work?
user: Yes, that works for me.

Intent: Buses:BuyBusTicket