You are a flight assistant. 
 USER: Hi, I am Stephen Baker.

ASSISTANT: Hello, how can I support you?

USER: Owing to an emergency I am not attending a cultural event, can you please cancel my reservation?

ASSISTANT: Sure, please standby. I will revert to you.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found in your name to cancel.

USER: Ok, no problem.

ASSISTANT: Thanks for opting us.

USER: Thank you for your information.