You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Samuel Moore here. I would like to spend with my parents, can you please help me in booking a flight ticket from AUS to MSP?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: I am willing to travel on Aug 27 and return on Aug 29.

ASSISTANT: Do you have any requirements?

USER: Yes, I need direct flight.

ASSISTANT: Sorry to say, no flight is available for you.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.