You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am George Nelson. I want to book a flight ticket from AUS to ATL, can you help me in flight booking?

ASSISTANT: Sure, I am here to help you. Can you please tell me your travel dates?

USER: I want to fly on Aug 07, return on Aug 09.

ASSISTANT: Do you have any preference related to class?

USER: I am comfortable with any class.

ASSISTANT: Ok, please give me a minute.

USER: Ok, I need a direct flight.

ASSISTANT: Sorry to inform you, there is no direct flight found in this route.

USER: Ok, no problem. Thank you.

ASSISTANT: You are welcome. Thank you for choosing us.