You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I want to travel from PHX to DTW. Can you help me to book a flight ticket?

ASSISTANT: Sure, may I know your preferable travel dates?

USER: I want to fly in the flight on Sept 24 and Sept 26.

ASSISTANT: Would you like to board a direct flight or connecting flight?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Is there any other requirements regarding your journey?

USER: No.

ASSISTANT: May I know your name please?

USER: Carol Jones.

ASSISTANT: Sorry for the inconvenience, there are no flights available on this route as per your travel dates?

USER: That's ok. Anyways, thank you.

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