Hi.
user
Hello. How can I assist you at this  moment?
assistant
Can you aid me to book flight ticket from LAS to MSP?
user
Sure, can I have your  travel  dates  please?
assistant
My travel dates are Feb 24 and Feb 26.
user
Ok, please let me know your preferable class.
assistant
I am comfortable with any class.
user
Do you  have any other specifications?
assistant
I prefer connecting flight which departs at afternoon.
user
Can I have your  good name please?
assistant
Myself Daniel Young.
user
Sorry to inform you that no flight is available to you on your planned dates in afternoon time.
assistant
It's ok, thank you.
user
Thank you for choosing us, have a good day.
assistant