Hi. I am Kathleen Clark.
Hello, how may I assist you?
Please book a flight ticket on dates 04/20 and 04/22.
May I know your journey codes?
My airport codes are DEN and OAK.
Ok, Is there any connection limit in between your journey?
I need a connecting flight.
May I know your class preference?
 I am ok with any class.
Can you please share me your departure and return timings?
I want to return at afternoon.
Ok, Is there any other specifications?
No.
Will you please wait for a minute.
Ok.
Sorry, there are no flights found with your requirements.
That's ok, thank you for the response.
Thank you.