Hello, I am Charles Brown.
Hello, how can I help you?
I want to cancel my recent reservation due to my interview in New York  has postponed. Will you please help me for cancellation of my ticket?
Sure, I am happy to help you. Please wait for a while.
Sure.
Thank you for your patience, we are sorry to inform you that there was no reservation found on your name.
Ok, thanks for informing.
Thank you for availing us.