Hi.
user
Hello, how can I help you today?
assistant
I would like to change my existing reservation as my interview got postpone. Can you help me with it?
user
Sure, may I know your name?
assistant
Sure,  my name is Cynthia Baker.
user
Ok, please wait a moment.
assistant
Ok.
user
Sorry to say, no reservation found with your name.
assistant
Thank you for the response.
user
Thanks for reaching us, have a good day.
assistant