You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: I am Helen Moore. Can you please cancel my reservation as my plan to attend a seminar got cancelled?

ASSISTANT: Sure, we are here to help you to cancel it. Please be on hold.

USER: Thank you. Sure, I will wait for your response.

ASSISTANT: Sorry to say that, there was no reservation found on your name.

USER: It;s ok. Thank you for the information.

ASSISTANT: Thank you for choosing our service.