You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Jason Wilson. I want to book a flight ticket from AUS to DTW. Could you help me in booking?

ASSISTANT: Sure, can you share your journey dates?

USER: My travelling dates are from Aug 15-17.

ASSISTANT: Do you have any preferences?

USER: My return time should be in the morning and I need connecting flight.

ASSISTANT: Sorry, there is no flight on your given dates.

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

ASSISTANT: Thank you for reaching us.