Hi, I am Robert Perez.
user
Hello, How can I help you today?
assistant
I need to book a ticket to Las Vegas LAS to meet my children on 04/14 from Washington DC-IAD.
user
Ok, May I know the Departure date of travelling?
assistant
My return date is on  04/16. I prefer mostly 1 connection and price limit of  200.
user
Ok, could you please hold on for a minute, I will check the availability and get back to you.
assistant
Sure.
user
Sorry for the inconvenience, we are unable to find a flight on your preferred dates.
assistant
Ok, Thank you.
user
Thank you for connecting with us, Have a great day.
assistant