You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Dennis Allen. Can you please book a ticket from Charlotte, CLT to Oakland, OAK?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Trip dates are 06/06 to 06/08.

ASSISTANT: Ok, how much you can afford for flight ticket?

USER: I can afford up to 500.

ASSISTANT: Ok, we found a UA airline, flight number: 1006, price: 200 with one connection.

USER: You can proceed.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.