Hello. I am Helen Phillips.
user
Hello, what can I do for you?
assistant
I need to change my existing reservation, as my scheduled exam got postponed. Please help me in changing?
user
Ok, please wait a while.
assistant
Ok.
user
Unfortunately there is no reservation found according to your name.
assistant
Ok, no issues. Thank you for your service.
user
Thank you for opting us.
assistant