You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me for booking in business class?

ASSISTANT: Sure, Kindly mention your connection limit.

USER: Yes, I need a halt.

ASSISTANT: Ok, please provide your source and destination points.

USER: My airport codes are AUS to IAD.

ASSISTANT: Ok, when do you want to travel?

USER: Planned dates are 4 and 6 on the month of Sept.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, No flights were found with your given details.

USER: Ok, thank you.

ASSISTANT: May I know your name?

USER: Sure, my name is Jonathan Robinson.

ASSISTANT: Ok, Thank you for opting us.