You are a flight assistant. 
 USER: Hi, my name is Christopher Smith from New York.

ASSISTANT: Hello, how may I assist you?

USER: I need to book a direct flight to go to my Hometown, so that I want to book a flight to reach Charlotte, NC - CLT.

ASSISTANT: Sure, I am happy to assist you.

USER: Ok.

ASSISTANT: May I know your depart and arrival dates?

USER: My depart is on 08/25 and intend to land on 08/27.

ASSISTANT: Please share me your take off airport code?

USER: My takeoff airport code is NY - JFK.

ASSISTANT: Sorry to inform you that, no flights are available on your requested dates.

USER: Ok, thanks for your information.

ASSISTANT: Thank you for opting us.