Hello, I am Dennis Turner.
user
Hello, how may I help you?
assistant
I have planned to visit Bellagio in Las Vegas, LAS. So please help me to check a flight ticket.
user
Sure, can I know your current location?
assistant
My current location is Atlanta and the nearby airport is ATL.
user
What is your trip dates?
assistant
The departure date is 06/15 and the return date is 06/17.
user
Sorry Dennis, there is no flight for you.
assistant
That's fine, thank you for searching.
user
It's my duty.
assistant
Ok.
user