Hi.
Hello, how can I help you today?
Donald Turner here. Can you please reserve me a  flight ticket from DCA to DEN?
Sure, we are here to assist you.
Thank you.
Can you assign me your trip dates?
My trip daters are 02/02 -02/04.
Is there any airline preference for you?
I need a normal - cost airline.
Do you need any way station in your journey?
I need a single flag stop.
Do you have any other requirements?
No, thank you for asking.
Sorry to inform you that, there are no flights available with your requirements.
Not a problem, thank you.
For documentation, may I know your name please?
Already mentioned above.
Sorry for asking again. Any ways Thank you for reaching us.