You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How May I assist you today?

USER: Please help me in booking a flight ticket.

ASSISTANT: Sure, I am glad to help you. May I know your name?

USER: My name is Margaret Brown.

ASSISTANT: Thank you for providing your name, Please provide your journey details?

USER: Sure, the journey details- Source Airport : NC-CLT, Destination Airport : TX-IAH.

ASSISTANT: Thank you for providing your details. To proceed further, Can you please provide your journey dates?

USER: The journey dates - From : Jan/23 and to Jan/25.

ASSISTANT: Please be online, I will check and revert back to you. Thank you for your patience. Sorry to say that, we are not able to provide you any flight on the requested journey details.

USER: OK, Thank you for your valuable information.

ASSISTANT: Can you please provide your name for documentation purpose?

USER: My name is Margaret Brown.

ASSISTANT: Thank you.