Hello.
Hello, how may I aid you?
Myself Mary Martin. I am looking for a flight from DEN to IAD, can you please help me in booking a flight ticket?
Sure, could you please provide your travelling dates to search for the flight?
My travelling dates are May 28 and May 30.
Would you like to travel in an economy class or in a business class?
I am comfortable with any class.
 Is there any another specifications on your trip, so that I can arrange like that only.
I would to depart in evening.
 We regret to inform you that there are no flights moving to your region with your planned dates.
That's ok, thank you for checking.
Welcome, have a nice day.