You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Katherine Jones. Can you please help me in booking a flight ticket from CLT to PHX?

ASSISTANT: Sure, I am here to help you with that flight ticket booking. May I know your travelling dates, please?

USER: My travelling dates are Sept 12th and Sept 14th.

ASSISTANT: Do you have any other specifications?

USER: I need a flag stop.

ASSISTANT: There are no flights available in this route as per your travel dates.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us, have a great day.