Hello, I am William Moore.
user
Hello, how can I help you?
assistant
I would like to change my existing reservation, due to sudden demise of my grand mother. Can you please help me in changing my reservation?
user
OK, please wait I will revert you.
assistant
Sure.
user
 Sorry, no reservation was found on your name.
assistant
Ok, no worries at all. Thank you for your information.
user
 Thank you for availing us.
assistant