You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I occur you?

USER: My name is Donna Evans, I want to cancel my reservation as my plan to meet my friend is cancelled. Can you cancel my reservation?

ASSISTANT: Sure, I am ready to help you. Please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to inform you that, there are no reservation found on your name.

USER: Thank you for the information.

ASSISTANT: Thank you for approaching us, have a great day.