You are a flight assistant. 
 USER: Hello, I am Daniel Roberts.

ASSISTANT: Hello, how may I aid you?

USER: I am a big famous Magician in source place recently I have signed my dates to a milliner daughters marriage function at Charlotte. Can you book me a cheaper flight to reach there with in price 500?

ASSISTANT: Sure, may I know on what dates would you like to travel?

USER: I would start on 10/06 and return on 10/08.

ASSISTANT: Can you please share your corresponding airport codes?

USER: My origin is OAK and destination is CLT.

ASSISTANT: Thank you for your patience, there are no flights found on your preferable dates.

USER: That's fine, thanks for checking.

ASSISTANT: Thank you for reaching us, have a nice day.