Hi.
user
Hello. How may I help you today?
assistant
Due to the sudden demise of my granddad I want to change my existing reservation.
user
Sure, may I know your name for change in your reservation?
assistant
Sure, I have a existing reservation with name Brian Wilson.
user
Please wait a moment, let me check with the details.
assistant
Sure.
user
Sorry, there are no active reservations on your given name with our service.
assistant
Ok, no issues.
user
Thank you for reaching our service.
assistant
Thank  you for your assistance.
user