You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: I want to cancel my reservation as my plan for an adventure trip got cancelled. Can you help me in cancelling my reservation made on name Sandra White?

ASSISTANT: Sure. Please wait for a moment.

USER: Ok.

ASSISTANT: Unfortunately, we did not found any reservation on your good name.

USER: That's fine. Thank you for the support.

ASSISTANT: Thank you for opting us.