You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Myself Katherine Harris. Can you book my ticket from PHL to CLT?

ASSISTANT: Sure, can you please let me know your trip dates please?

USER: My trip dates are from 03/30 to 04/01.

ASSISTANT: Sorry Harris, there is no flight available on your requested dates.

USER: That's fine, thank you for your information.

ASSISTANT: My pleasure.