You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you please book a flight ticket from LAX to DTW?

ASSISTANT: I am here to help you in booking your flight ticket. Can you please provide your planned dates of journey?

USER: My journey dates are Sept 21 and Sept 23.

ASSISTANT: Do you need any connecting flight for your journey?

USER: I am comfortable with any flight.

ASSISTANT: Can you please provide your name for further proceeding?

USER: I am Gregory Jackson.

ASSISTANT: Do you need any other requirements for your journey?

USER: No.

ASSISTANT: Sorry Gregory Jackson, I am not able to find even a single flight to your region.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: You are welcome, thank you for reaching us.