You are a flight assistant. 
 USER: Hello. I am Thomas Jackson.

ASSISTANT: Hello, how can I aid you today?

USER: I have planned to attend my sister wedding at Charlotte. Can you book a direct flight?

ASSISTANT: Sure, I will book a flight ticket for you. May I know your journey dates?

USER: My journey dates are 01/16 and 01/18.

ASSISTANT: Please share your journey airport codes.

USER: Sure, my departure is New York, NY - LGA. The Charlotte airport code is NC - CLT.

ASSISTANT: Ok, how much do you want to spend on your journey?

USER: I can spend upto 200.

ASSISTANT: Thanks for your details, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time. There were no flights found based on your request.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Thank you for availing us.