Hi. I am Brandon Lee.
user
Hello, how may I help you?
assistant
I would like to visit White House at Washington.Can you help me with booking a flight ticket?
user
Sure,  please provide your journey details?
assistant
My travelling dates are from 02/09 to 02/11. Airport codes: LGA to IAD. Connection limit is 1.
user
Please wait for a while, I will check and revert you.
assistant
Sure.
user
Sorry there were no flights matching your preferences.
assistant
Ok, No problem. Thanks for the information.
user
Thank you for reaching us, have a good day.
assistant