Hello, I am Charles Brown.
user
Hello, how can I help you?
assistant
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?
user
Sure, I am happy to help you. Please wait for a while.
assistant
Sure.
user
Thank you for your patience, we are sorry to inform you that there was no reservation found on your name.
assistant
Ok, thanks for informing.
user
Thank you for availing us.
assistant