Hello.
Hello, how can I aid you?
I have already reserved a flight ticket to Oakland to visit Oakland California temple. But owing to an emergency, I had to request for this change reservation.
Sure, we are here to assist you. To check with your reservation details in the airline database,  can you please let me know your name?
Jonathan Jones is my name.
Thanks for providing your name. There was no no reservation found on your name.
Ok, no issues. Thanks for your service.
Thank you for choosing our service. Have a pleasant day.