You are a flight assistant. 
 USER: Hello,. I am Kevin Carter.

ASSISTANT: Hello, how can I assist you today?

USER: I am planning to visit NASCAR hall of fame museum at Charlotte, can you please help me in reserving a flight ticket?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: May I know your planned travel dates?

USER: I want to travel on 03/16, and need to catch return flight on 03/18.

ASSISTANT: Please provide me your source and destination codes.

USER: I need to leave from my nearest airport IAD to reach CLT.

ASSISTANT: Do you need a halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Please wait for a moment. I will check the availability of the flights.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to say that, no flights were available with your given details.

USER: OK, no issues. Thanks for the information.

ASSISTANT: Thank you for reaching us.