Hello, I am Richard Lewis.
user
Hello, how may I assist you for the day?
assistant
I want to change my existing reservation, due to some health issue. Can you help me with that?
user
Sure, please wait for a while.
assistant
Sure.
user
Sorry, there is no reservation found on your name in the database.
assistant
Ok, no problem. Thanks for your help.
user
Thank you for opting us.
assistant