You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, let me know your travelling dates?

USER: My travel dates are Feb 16 and Feb 18.

ASSISTANT: Do you have any connection limit?

USER: I prefer connecting flight for this trip.

ASSISTANT: Is there any other specifications?

USER: No, thanks for asking.

ASSISTANT: May I know your good name?

USER: I am Robert Roberts.

ASSISTANT: We found a connecting flight 1006 in Spirit airline with fare 100 and class is economy.

USER: Please proceed to book my flight ticket in this airlines.

ASSISTANT: Shall I proceed?

USER: Please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you.