You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I am Debra Green. I would like to cancel my recent reservation, but due to some personal issues my seminar has been cancelled. Could you please help me?

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

USER: Sure.

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

USER: Ok. not an issue. Thank you.

ASSISTANT: Thank you.