Hello.
Hello, how can I aid you?
I am looking for a flight from IAH to IAD, can you help me?
Sure, please provide your trip dates.
My trip dates are 03 and 05 of Apr.
Do you need any specifications?
 I am willing to travel in a single connecting flight.
May I know your name?
I am Charles Lewis.
There is no flights available on your dates.
It's ok, not a problem, thank you.
Thank you for choosing us.