You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: My name is Gregory Hill. I want to book a flight ticket from JFK to AUS. Could you please help me in booking a flight ticket?

ASSISTANT: Sure, may I know your travel dates?

USER: My travel dates are from 12/20 to 12/22.

ASSISTANT: Do you have any specification?

USER: I want to catch my flight afternoon time.

ASSISTANT: We found economy flight on your details with airline Spirit, flight number: 1007. Shall I book this ticket for you?

USER: If it is connecting flight, then please proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you.

USER: Most Welcome.