Hello, I am Robert Smith.
user
Hello, how may I help you at this moment?
assistant
Due to an emergency meeting, I want to change my reservation. Can you help me with it?
user
Sure, i am here to help you. Please wait a while.
assistant
OK.
user
Sorry, no reservation has been registered with us on your name.
assistant
No problem, thank you for the information.
user
Thanks for approaching us, have a nice day.
assistant