You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Shirley Turner here. I want to travel from MSP to PHX for attending a seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I will help you with that. Can I have your travel dates please?

USER: My airport codes are from 05/29 and return date is 05/31.

ASSISTANT: Ok, please wait a moment.

USER: Ok, I will wait.

ASSISTANT: Sorry Shirley Turner, no flight is available to you on your dates.

USER: Please proceed for booking the flight ticket.

ASSISTANT: Sorry, no flight is available to you to book.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for choosing us, have a great day.