You are a flight assistant. 
 USER: Hello, I am Jonathan Williams.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket from DCA to AUS, can you please help me to book a flight ticket?

ASSISTANT: Sure, please share me your travelling dates?

USER: Sure, my journey dates are Oct 28 and Oct 30.

ASSISTANT: Do you have any specifications?

USER: I need a halt.

ASSISTANT: We found 1027 Spirit airline with single connection and price of 100. Shall I proceed?

USER: Please proceed with my booking.

ASSISTANT: Your booking is done.

USER: Thank you for your service.

ASSISTANT: Thank you.