Hello.
user
Hello.
assistant
I am Brenda Johnson here.
user
How can I assist you for the day?
assistant
I want to change my existing reservation, due to some health issue. Can you help me?
user
Sure, I will help you with that clanging. Please hod for a moment, let me check  your previous reservation status.
assistant
Sure.
user
Sorry to say, there is no active reservation found with your name to change it.
assistant
Ok, not a problem. Thank you for your information.
user
Thank you for contacting us, have a great day.
assistant