You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to visit Carowinds in Charlotte, NC-CLT. Can you please help me for booking the flight ticket from Phoenix?

ASSISTANT: Sure, can you please tell your travelling dates?

USER: The travelling dates are 03/16 to 03/18.

ASSISTANT: Please tell your origin airport code.

USER: The source code is Phoenix, AZ-PHX.

ASSISTANT: Can you please tell your name?

USER: Sure, my name is Larry Phillips.

ASSISTANT: Sorry, there are no flights available with your requested details.

USER: No problem, I will search another way to complete my trip.

ASSISTANT: Thank you and have a nice day.

USER: Thank you for your information.