Hello.
user
Hello. How may I assist you today?
assistant
My holiday vacation has been postponed.Can you please help me for cancelling the recent reservation?
user
Sure, to cancel your reservation  may I know your name?
assistant
Sure, my name is Richard Wilson.
user
Wilson, Sorry to say that no reservation with your name. Thank you for contacting us.
assistant
Thank you for your information.
user
It's my pleasure.
assistant