Hello, I'm Thomas Miller.
user
Hello, how can I serve you?
assistant
There is an Autoexpo'2017 motorcar show which is going to be held at Las Vegas for which I wish to attend. So, please help me to book a flight.
user
Sure.
assistant
My travel dates are depart date on:10/20 and return date on:10/22. The airport codes are IL - ORD to NV - LAS.
user
Ok, please wait a moment.
assistant
I wish to travel in a flight with price limit:500 and connections limit as 1.
user
Thank you for waiting there were no flight found given requirements.
assistant
Do you need any other information? OK. Thank you, I appreciate your efforts.
user
Thank you, have a nice day.
assistant