You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Emma Rodriguez, want to travel from CLT to PHX. Can you book my ticket?

ASSISTANT: May I know your travelling dates?

USER: My travelling dates are from 11/22 to 11/24.

ASSISTANT: Sorry, there is no flight available as per your requested dates.

USER: That's fine. Thank you for your help.

ASSISTANT: Most welcome.