Hello,. I am David Brown.
user
Hello, how may I be at your service today?
assistant
I want to change my existing reservation due to some health issues, can you please help me with that?
user
Sure, we are here to help you. Please wait for few minutes.
assistant
Ok.
user
Sorry there is no reservation found with your name.
assistant
Ok, not an issue. Thank you for your information.
user
Thank you for availing us.
assistant