Hello.
Hello. How can I serve you?
 I am Michelle Thompson.
Ok.
I want to travel to CA-OAk to attend  a meeting. Can you book  a connecting flight?
Sure. Can I know your travelling dates?
My travelling dates are 12/11 and 12/13.
Where would you like to start from?
 I will depart from DC-IAD.
Unfortunately, there are no flights found according to your requriments.
Thank you for your response.
Thank you for consulting us.