You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Deborah Wilson, can you book my ticket from AL to CLT?

ASSISTANT: May I know the traveling dates?

USER: My travelling dates are from 03/9 to 03/31.

ASSISTANT: There is no flights available.

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

ASSISTANT: Most welcome.