Hello.
Hello, how may I aid you today from my end?
I am looking for a flight from IAD to EWR, can you please help me in booking?
Sure, I am here to help you out. Please provide me your trip dates. May I know your name to proceed further?
My travelling dates are July 13 and July 15.
Thank you for providing your trip dates.
My name is Gary Perez.
Ok, do you connection limit?
I need a connecting flight.
Is there any other requirement?
I prefer economy class.
Sorry  Gary Perez, there is no flight in your route as per your requirement.
That's ok, thank you for checking.
Thank you for reaching us.