Hello. I am Eric Scott.
Hello, how can I aid you today?
I am planning to travel from DEN to IAD, can you please help me in flight booking?
When are you planning to travel?
I will start on Sept 10, return on Sept 12.
Do you need a business class or a economy class?
I am comfortable with any class.
Do you need a connecting flight?
I need a flight with one connection.
Do you have any preferences with  timings?
My depart time should be evening.
Thank you for your details, there are no flights found with the given details.
No problem, thank you.
Thank you.