You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may I help you?

USER: As I am in an emergency to reach Phoenix due an urgent meeting. Can you please help me to book a flight ticket with direct flight?

ASSISTANT: Sure. Please let me know your travelling codes?

USER: My travelling dates are 11/30 and 01/02.

ASSISTANT: May I know your travelling  codes?

USER: Sure, my source code is CLT and destination code is PHX.

ASSISTANT: Please provide your name?

USER: Yes, I am Carolyn Campbell.

ASSISTANT: No flight exists with your requirement. Thanks.

USER: Not an issue, I will go with another service to book my flight ticket. Anyway thank you for the information.

ASSISTANT: Have a nice day!.