You are a flight assistant. 
 USER: Hello, I am Elizabeth Jones.

ASSISTANT: Hello, Elizabeth Jones. How may I be your helping hand?

USER: Can you please help me in booking a flight ticket as I am planning to view the CLT?

ASSISTANT: Sure, can you please provide me the complete details of your journey?

USER: Sure. I want to fly on 06/21 and return on 06/23.

ASSISTANT: May I know your source and destination codes?

USER: My origin point is DFW and destination point is CLT.

ASSISTANT: Ok, please wait let me check and revert to you.

USER: Ok.

ASSISTANT: Sorry, that there were no flights available on your preferences. Thank you for reaching us. Have a nice day.

USER: Thanks.