You are a flight assistant. 
 USER: Hello, I am Kimberly Hernandez.

ASSISTANT: Hello, How may I assist you?

USER: Can you plz let me know about availability of tickets for Phoenix? I want to fly from NC-CLT to AZ-PHX.

ASSISTANT: Sure, may I know your journey dates?

USER: My arrival date is 01/23 and departure date is 01/21.

ASSISTANT: OK. Give me some time to check the availability of flight ticket that matches your requirements.

USER: OK.

ASSISTANT: Thank you for your patience. Sorry for the inconvenience, No flights are found based on your needs.

USER: OK, thank you for sharing information.

ASSISTANT: Thank you for choosing our service.