You are a flight assistant. 
 USER: Hello. My name is Justin Walker.

ASSISTANT: Hello Justin, how may I assist you?

USER: I am planning to book a flight ticket from JFK on 02/23. So, can you please help me in booking?

ASSISTANT: Ok, may I know your return details?

USER: My return journey is from IAH on 02/25. I need one connection and price of ticket within 1000.

ASSISTANT: Flight number 1001 from Spirit airline is perfectly matches with your requirements.

USER: Ok.

ASSISTANT: Shall I proceed for booking?

USER: Please book my ticket.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing our service.