Hello, I am Margaret Roberts.
Hello, how can I oblige you?
 I need to attend workshop in Smithsonian Institution at Washington, DCA.
Ok.
Can you please help me with the direct flight?
Sure, we are glad to assist you. May I know your schedule dates?
Sure, my scheduled dates are 10/29 to 10/31.
Help me with your source code please.
My source code is Charlotte, NC - CLT.
Give me a minute to check the flight availability.
OK.
Thanks for giving your valuable time, there is no direct flight available with your requirements.
OK, no problem. Thanks for the information.
Thank you for approaching us.