You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you now?

USER: Can you please help me in booking a flight ticket from PHX to DEN?

ASSISTANT: Sure, I will help you with that. May I know your journey dates, please?

USER: Sure, my travel dates are from Oct 08 to Oct 10.

ASSISTANT: Do you have any connection limit for your journey?

USER: I would prefer connecting flight for my trip.

ASSISTANT: May I know about your other specifications, if any?

USER: I would like to depart in the evening.

ASSISTANT: Let me know your name to proceed further for documentation purpose.

USER: Myself Rebecca Moore.

ASSISTANT: Sorry to say that, we have not found any flights running on your desired routes.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.