Hello.
Hello, how may I aid you today from my end?
I am Paul Moore. I need your assistance in booking my flight ticket from BOS to IAD?
Sure, I am here to help you out. Please provide me your trip dates.
My depart date is Mar 25, my return date will be Mar 27.
Sorry  Paul Moore, there is no flight in your route.
That's ok, thank you.
Thank you.