You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: My name is Richard Clark. I want to cancel my reservation due to cancel of my seminar.

ASSISTANT: Ok, please give me a minute. I will check your reservation status.

USER: Sure.

ASSISTANT: Sorry Clark, there is no reservation available on your name.

USER: No issue, thanks for your service.

ASSISTANT: You are welcome.