Hello, I am Jerry Anderson.
user
Hello, how can I help you?
assistant
I want to change my existing reservation due to some issues, can you please help me with that?
user
 Ok, please wait I will revert you.
assistant
Sure.
user
 Sorry to inform you that no reservation was found on your name.
assistant
Ok, not an issue. Thank you for your information.
user
 Thank you for availing us.
assistant