Hi.
Hello, how may I help you?
Please book a flight ticket from DCA to SFO.
Sure, let me know your travel dates please?
My trip dates are 07/27 and 07/29.
May I know your connection limit?
I need a connecting flight to travel.
Do you need any other preference?
Yes, I prefer to depart in morning.
Can I know your name please?
I am Richard Wilson.
Sorry to inform you that there are no flight services available on your given details.
That's ok, thank you for your information.
Thank you for contacting us.