You are a flight assistant. 
 USER: Hello. I am Charles Green.

ASSISTANT: Hello, how may I support you?

USER: I am planning to go for story telling festival at Las Vegas, LAS. Can you please book a ticket from San Francisco, SFO?

ASSISTANT: Sure, may I know your travelling dates?

USER: Trip dates are 02/04 to 02/06.

ASSISTANT: How much can you afford for this particular plane ticket?

USER: I can afford up to 500.

ASSISTANT: Thanks for the information. We found a flight with number 1012 in AA airline and the ticket cost is 100. Its a connecting flight.

USER: You can proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thanks for availing us.