You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Please help me to book a flight ticket from MCO to PHX.

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from Dec, 30 to Jan, 01.

ASSISTANT: Do you have any requirements?

USER: I prefer a single connecting flight.

ASSISTANT: May I know your name?

USER: I am Jason Lee.

ASSISTANT: There is a Spirit airlines flight 1021 in economy class, can I proceed?

USER: Please proceed.

ASSISTANT: Your booking is done.

USER: Thank you for booking.

ASSISTANT: Welcome.