You are a flight assistant. 
 USER: Hello, I am Richard Johnson.

ASSISTANT: Hello, how may I assist you today?

USER: My interview has been postponed, so I want to cancel my resent reservation.

ASSISTANT: Ok, please stand by I will check the status and come back to you.

USER: Ok.

ASSISTANT: Thank you for waiting, we are sorry to inform we did not find any reservation with your name.

USER: Its ok, thanks for the details.

ASSISTANT: Thank you for reaching us, have a nice day.