Hello.
user
Hello, how can I serve you today?
assistant
I am Jerry Collins want to change my reservation due to postpone of my meeting with the client. Can you please help me in changing?
user
Sure, please wait for a moment.
assistant
 Ok.
user
Sorry to say that, no reservation was found with your good name.
assistant
Ok, thank you for your help.
user
Thank you for reaching us.
assistant