You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Katherine Hall.

ASSISTANT: How can I help you today?

USER: I have a plan to celebrate my birthday in Los Angeles, can you help me for booking a flight ticket?

ASSISTANT: Sure, I will help you in booking. Can I have your travel dates?

USER: My travelling dates are 01/12 and 01/14.

ASSISTANT: Ok, may I know your airport codes?

USER: My source airport code is CLT and destination airport code is LAX.

ASSISTANT: Flight 1016 in Spirit airlines is available for you with 1 connection. Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Welcome, have a safe flight.