Hi, I am Robert Nelson.
user
Hello, how can I help you today?
assistant
Owing to an emergency, my business conference got postponed. So I have a request to you to change my existing reservation?
user
Sure, please wait a while.
assistant
Sure.
user
Sorry to say that, no reservation was found on your name.
assistant
Ok, no worries at all.
user
Thank you for opting us.
assistant
Thanks for your kind service.
user