You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michelle Young.

ASSISTANT: Michelle Young. How may I help you?

USER: Can you please book me a flight ticket from DFW to CLT?

ASSISTANT: Sure, can you provide me with the travel dates?

USER: My planned trip dates are Dec 22nd and Dec 24th.

ASSISTANT: Give me a moment please.

USER: I need a single connecting flight. Ok, sure.

ASSISTANT: I regret to inform that, there are no flights on your requested dates.

USER: Ok, no problem. Anyways, thank you.

ASSISTANT: Thank you for approaching us.