You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you for the day?

USER: Can you help me to book a flight ticket from ATL to AUS?

ASSISTANT: Sure, I am here to help you with booking. May I know your journey dates, please?

USER: My travelling dates are 02 and 04 of Aug.

ASSISTANT: Which class do you prefer either economy or business?

USER: I prefer to travel in economy class.

ASSISTANT: May I know your name please?

USER: I am Kevin Anderson.

ASSISTANT: Do you have any other specifications?

USER: My airline preference is normal cost with a connecting flight.

ASSISTANT: There are no flights found on this route as per your details.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for reaching us, have a great day.