Hello, I am Patrick Campbell.
user
Hello, how can I serve you?
assistant
I want to change my existing reservation due to some health issues, can you please help me with that?
user
Sure, I will help you. Please wait for a while.
assistant
Sure.
user
Thanks for being patient. Sorry, there is no reservation found on your given name.
assistant
Ok, no issues. Thanks for your service.
user
Thank you for choosing us.
assistant