Hi, I am Gary Parker.
user
Hello, how can I support you?
assistant
I need to change my recent existing  reservation due to postpone of my wedding. Could you please help me in doing that?
user
Sure, I am happy to help you. Please wait for a moment, I will check the existing reservation on your name to change it.
assistant
Sure.
user
Thank you for being patient, There is no reservation found on your name.
assistant
No problem, thank you for your valuable information.
user
Thank you for reaching us.
assistant