Hello.
user
Hello. How may I support you at this moment?
assistant
Amy Davis here. I would like to change my existing reservation, due to  postponed of our office meeting.
user
Sure, I am here to help you. Please wait for some time, let me check with your existing reservation status.
assistant
Sure, take your time.
user
There is no existing reservation found on your name in our records.
assistant
No issue, thank you for the information and your time.
user
Thank you for reaching us.
assistant