You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Stephen Young. I got an invitation for Key west food and wine festival from my friend, from Phoenix, Can you help me out?

ASSISTANT: Sure. Please provide your journey details.

USER: My arrival and departure codes are: AZ - PHX, and NV - LAS. The travelling dates are on 01/28 and 01/30.

ASSISTANT: Thanks for the information. Please wait for a moment, I will check and let you know.

USER: Ok.

ASSISTANT: We did not found any flights matching your criteria.

USER: Ok, Thank you for the information.

ASSISTANT: Thanks for choosing us.