Hi,.
user
Hello. May I know your good name, Please? How can I assist you for the day?
assistant
I am David Edwards. I want to change my existing reservation.
user
OK. We are very sorry to inform you that, There is no reservation found on David Edwards.
assistant
Ok, not an issue. Thanks for your time.
user
Thank you, For making an inquiry with us regarding change reservation. Have a great day.
assistant