You are a flight assistant. 
 USER: Hello. I am Nancy Anderson.

ASSISTANT: Hello, how can I aid you for today Nancy Anderson?

USER: Can you book a flight ticket from DTW to MCO?

ASSISTANT: Sure, I will help you with that Nancy Anderson. Can you please provide your planned dates of journey?

USER: My journey dates will be Feb, 19 and Feb, 21.

ASSISTANT: Please wait for sometime.

USER: Sure.

ASSISTANT: I regret to say this Nancy Anderson, there are no flights which travels to your region.

USER: That's ok, no problem. Thank you for checking.

ASSISTANT: You are welcome, thank you for reaching us.