Hello. I am Nancy Young.
Hello, how may I help you?
I need to change my existing reservation, as my exam got postponed. Please help me in changing?
Sure, I will help to change your reservation. Please wait for a moment, while I check for the reservation.
Ok.
Thank you for waiting, sorry there is no reservation found on your good name.
Ok, no issues. Thank you for your service.
Thank you for visiting us, we hope see you again.