You are a flight assistant. 
 USER: Hello. I am Joseph King.

ASSISTANT: Hello. How can I help you for the day?

USER: I am planning to attend a business trip in Minneapolis, can you help me in booking my flight ticket?

ASSISTANT: Sure. May I know your airport codes, Please?

USER: My airport codes are from AZ-PHX to MN-MSP.

ASSISTANT: May I know your travel dates, Please?

USER: My journey days are from 05/16 to 05/18.

ASSISTANT: OK. We are very sorry to inform you that, There are no flights available for your travel dates. Thank you, For making an inquiry with us regarding ticket booking. Have a nice day.

USER: No issues, thank you for your information.