You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a flight ticket to DTW. Can you please assist me for booking a flight ticket from AUS?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My planned dates are on Sept 14 and 16.

ASSISTANT: May I know your name?

USER: Dennis Turner.

ASSISTANT: Sorry Dennis Turner, no flights are available on your route.

USER: Ok, thank you.

ASSISTANT: Thank you for choosing us.