You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: My name is Scott David, I want to book a flight from NC-CLT to watch base ball game at San Francisco. Can you book a flight with in fare of 500?

ASSISTANT: Sure, may I know your destination airport code?

USER: My destination airport code is CA-SFO.

ASSISTANT: Can you please provide me your depart and return dates?

USER: I will fly on 12/27 and return on 12/29.

ASSISTANT: Ok, we found a AA airline, flight number: 1000, price: 300 with one connection.

USER: Please proceed with booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for helping me.

ASSISTANT: Thank you for opting us.