Hello.
user
Hello. How can I help you?
assistant
I am planning to change an existing reservation, due to health issue. Can you please help me out?
user
May I know your name please?
assistant
My name is Dorothy Walker.
user
Sorry to say, there is no reservation on your name in our database.
assistant
That's fine, thank you for your service.
user
Thank you for opting us.
assistant