Hello.
Hello, how can I assist you at this moment?
I am planning to celebrate my birthday at San Francisco, will you help me in booking the flight ticket from DCA to SFO?
Sure, I will help you with that. Can I have your travel dates please?
My preferable journey dates are May 16 and May 18.
Ok, please let me know the timings of your journey.
I would like to depart in afternoon time.
Do you prefer any specific  class to travel?
I prefer economy class.
Are you looking for any connecting flight or direct flight only you want?
I need a flight with single connection.
Do you  have any other specifications to get best flight for you?
No, thank you for asking.
Can I have your good name please to proceed further?
Myself Sharon Evans.
Ok, please wait a moment.
Sure, take your own time.
Sorry Sharon Evans, no flight is available to you on your dates which can depart in afternoon time.
Ok, not an issue. Thank you for your information.
Thank you for choosing  us, have a good day.