You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best I can help you?

USER: Aid me in booking a flight ticket from AUS to DCA.

ASSISTANT: Sure, let me know your preferable dates.

USER: I planned to travel in between May 08 and May 10.

ASSISTANT: Ok, please share your class preference.

USER: Any class is comfort for me but make sure that a connected flight is required.

ASSISTANT: Do you have any other concerns?

USER: No.

ASSISTANT: Can I have your name?

USER: Jeffrey Jackson here.

ASSISTANT: We found a direct flight with a fare of 100 in 1003 Frontier Airlines, shall I proceed?

USER: Sure, proceed to book it.

ASSISTANT: Ok, I have confirmed your booking in economy class.

USER: Thanks for your help.

ASSISTANT: Thank you for choosing us.