Hello.
user
How may I help you?
assistant
I am John Anderson. I want to change my existing reservation, due to some health issue. Can you please help me?
user
Ok, please wait a moment I will revert you back with the proper information.
assistant
Ok, I will wait for your information.
user
Thanks for your time, there is no reservation found with your name.
assistant
That's ok, thank you for checking.
user
Thanks for choosing us.
assistant