You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Dorothy Wilson want to visit MSP, can you book a ticket from CLT?

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates please?

USER: Sure, my travelling dates will be 04/26 and 04/28.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.