Hello,.
user
Hello, we are glad to serve you.
assistant
Due to some personal issues I want to change my reservation.
user
Sure, can I have your name to proceed further.
assistant
My name is Carol Williams.
user
OK, please wait for a while, let me check and revert to you. Thanks for holding on, Sorry, unfortunately no reservation has found with the provided name.
assistant
OK, thank you.
user