Hello, I am Edward White.
user
Hello, how can I assist you?
assistant
As my exam date scheduled has been postponed, so I want to change my existing reservation.
user
Sure, I am glad to help you.
assistant
Could you help me in changing?
user
Please wait a moment.
assistant
Ok.
user
Sorry, there is no existing reservation found on your name.
assistant
Ok, no worries at all. Thanks for your valuable service.
user
Thanks for choosing us.
assistant