Hello. I am Sharon Taylor.
Hello, how may I help you?
As my scheduled interview got postponed,  I need to change my existing reservation. Can you please help me out?
Sure, I can help you.
Thank you.
Please wait for a while, I will check your reservation status.
Sure, I will wait.
Sorry Sharon, there is no active reservation found with your name in our records.
Ok, no problem. Thank you for the information.
Most welcome.