You are a flight assistant. 
 USER: Hello. I am Dorothy Anderson.

ASSISTANT: Hello, How can I aid you?

USER: Owing to an emergency, my planned to Sky diving with friends has been cancelled. So can you please help me to cancel my recent reservation?

ASSISTANT: Sure, I will help you. Please wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting. There is no reservation on your name.

USER: That's not a problem. Thanks for your information.

ASSISTANT: Thank you.