Hello,. I am Nancy Mitchell.
Hello,how can I aid you?
I want to make a reservation.
May I know the travelling details ?
Sure, my travelling airport codes are from CA - OAK to CO - DEN. And my destination and origin dates will be on  Feb 20 to Feb 22.
OK,please wait for a while.
My departure and return dates will be on Feb 20 to Feb 22.
Thank you for waiting there is no flights founds by the given travelling dates.
OK, thank you.
OK, thank you for choosing us.