You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Could you help me in booking a flight ticket from CLT to PHX?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: I want to fly on Nov 25, return on Nov 27.

ASSISTANT: Is there any connection preference?

USER: I want a direct flight.

ASSISTANT: May I know your name please?

USER: My name is Brandon Jackson.

ASSISTANT: Do you have any other specification?

USER: No.

ASSISTANT: Brandon Jackson, there are no flights available in your route.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.