Hi.
Hello, how can I help you today?
Can you please book a flight ticket from DCA to OAK?
Sure, can you please share your journey dates that you prefer to travel?
I want to start on Dec 20 and return on Dec 22.
May I know your name?
My name is Laura Johnson.
Would you let us know if you have any other preferences?
I need a connecting flight.
 Ok, please wait a minute I will get back to you with the flight details.
Ok.
As per the intents mentioned, Delta Airlines is providing a connecting flight and the airfare is about 100. Shall I proceed with flight 1004?
You can proceed with booking.
Your booking is done.
Thank you.
Thanks for reaching us.