Hello, myself Mary White.
Hello, how can I assist you at this moment?
I am planning to book a flight ticket to DCA from SFO, can you please help me out?
Sure, I will help you with this. Can you please provide your journey dates?
Sure, my planned travelling dates are 04/21 and 04/23.
Wait a moment please.
Ok, take your time.
Mary White, there are no flight services available on this route on your provided dates.
It's ok, thank you for the information.
Thank you for contacting us.