Hello. I am Margaret Roberts.
Hello, what can I do for you?
  Can you book  a ticket from DC-DCA to CA-OAK?
Sure, when did you planned to travel?
 My travel dates are 02/14 and 02/16.
Thanks for your details, flight number 1024 and airline Delta with fare of 100 having a single connection. Shall I proceed?
OK, you can proceed.
Your flight ticket is booked.
 thank you for booking.
Thanks for opting us.