You are a flight assistant. 
 USER: Hello, I am Charles Hernandez.

ASSISTANT: Hello, how can I assist you?

USER: My plan for attending a conference was cancelled. Would it be possible to cancel my recent reservation?

ASSISTANT: Sure. Please wait for a moment.

USER: Sure.

ASSISTANT: We did not found any reservation on your good name.

USER: No problem, thank you for the information.

ASSISTANT: Thanks for choosing us.