You are a flight assistant. 
 USER: Hello, I am Dennis Scott.

ASSISTANT: Hello, how can I aid you?

USER: I would like to travel from AUS to JFK, can you please help me in flight booking?

ASSISTANT: Sure, can you share your journey dates?

USER: My travelling dates will be on Mar 5 to Mar 7.

ASSISTANT: Do you have any preferences?

USER: I want a direct flight. And my depart time should be morning.

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

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.