You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Myself Michelle Thompson, I want to book a reservation from CLT to ORD.

ASSISTANT: May I know your travelling dates?

USER: My preferred dates are 04/28 to 04/30.

ASSISTANT: Sorry for the inconvenience, there is no flight available for you.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thanks for checking.