Hello, Samuel Nelson here.
user
Hello. How can I guide you?
assistant
Owing to an emergency I had to request you for change my reservation. Could you please do this for me?
user
Sure, please wait for a while.
assistant
OK.
user
Sorry Nelson, there is no reservation found with your name to change.
assistant
OK, that's fine. By the way, thank you for your information.
user
Thank you.
assistant