You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How can I help you?

USER: Please, cancel my recent reservation as my trip got cancelled.

ASSISTANT: Ok, may I know your good name?

USER: Sure, I am Samuel Johnson.

ASSISTANT:  Please wait I will revert you in a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation was found on your name.

USER: Ok, thank you for information.