Hi. I am Patrick Martin.
Hello. How may I assist you today?
I am looking for a flight from IAD to IAH, hope you are helping me out.
Sure, please provide me your travelling dates.
Ok, my trip dates are from Sept 20 to Sept 22.
Sorry for this inconvenience, I could not find any flight with travelling dates.
It's ok, thanks for your information and service.
My pleasure.