You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: Can you aid me to book a flight ticket from AUS to DCA?

ASSISTANT: Sure, may I know the travelling dates?

USER: My trip dates are Sep 9 and Sep 11 respectively.

ASSISTANT: Do you have any connection limit?

USER: I prefer for connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No other requirements.

ASSISTANT: May I know your name?

USER: Catherine Mitchell here.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: The economy class with flight number 1004 of Southwest airline is available having fare as 100 and connection as 0, is it ok for you?

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for availing us.