You are a flight assistant. 
 USER: Hello, my name is Charles Mitchell.

ASSISTANT: Hello, how can I assist you today?

USER: I want to book a flight ticket from TX - HOU to GA - ATL to meet my first cousin in Atlanta.

ASSISTANT: Sure, may I know your budget?

USER: My budget is 500.

ASSISTANT: Ok, please share your journey dates.

USER: I will start on 03/29, return on 03/31.

ASSISTANT: Ok, please be on hold.

USER: I want a direct flight.

ASSISTANT: Thank you for being on hold, we did not find any direct flight on your details.

USER: No problem, thanks for your service.

ASSISTANT: Thank you for choosing us.