You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Michael Jackson. Will you please assist me in cancelling my reservation as the program which I want to visit got postponed?

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: It's ok, thank you for your kind information.

ASSISTANT: Thanks for reaching us, have a good day.