You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: My name is Nicholas Garcia.

ASSISTANT: Hello Garcia.

USER: I want to cancel my reservation due to cancel of my seminar.

ASSISTANT: Ok, please wait a moment to check your previous reservation status.

USER: Sure.

ASSISTANT: Sorry to inform you that, there is no reservation found with your name in our records.

USER: No problem, thanks for your help.

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