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