Hi, I am Margaret Lewis.
Hello, how can I assist you today?
I want to go to Oakland to enjoy Spring season with my college friends in the month of march. Can you help me with reservation?
Sure, may I know your journey details?
Sure, I am looking for a single connection in between journey. And  my price limit is 500. My journey starts on 03/02 and ends on 03/04.
Please provide your airport codes.
And I want to fly from DC - IAD to CA - OAK.
Please wait for a moment, I will check and get back to you.
Sure.
Thanks for waiting, I found a UA airline, flight number: 1009. Price: 300 with one connection. Shall I proceed with this booking?
Yes, you can.
Ok, your flight ticket has been confirmed.