Hello.
user
Hello, how may I help you?
assistant
I just need some help in cancelling my existing reservation.
user
Sure, may I know your name?
assistant
I am Ruth Nelson.
user
Ok, wait for a minute, so that I will check the reservation.
assistant
Ok.
user
Sorry Ruth, no reservation found on your name.
assistant
It's ok, thank you for your service.
user
Thank you for contacting  us.
assistant