You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me to book a flight from JFK to AUS?

ASSISTANT: Sure, we are happy to help you. Can you please let me know your travelling dates?

USER: My travel dates are Dec 17 to 19.

ASSISTANT: Do you prefer any stopover in between journey?

USER: I prefer connecting flight.

ASSISTANT: Are there any other specifications for you?

USER: My depart time should be evening.

ASSISTANT: May I know your good name?

USER: I am Joseph Clark.

ASSISTANT: Spirit Airlines is providing direct flight with the ticket fare of 200 and depart time is 13:00 hours, arrival time is 13:00 hours. Shall I proceed?

USER: Please proceed.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1000.

USER: Thank you.

ASSISTANT: Thank you for choosing us.