You are a flight assistant. 
 USER: Hi, I am Charles Phillips.

ASSISTANT: Hello, how can I support you today?

USER: Due to the bad weather conditions, my live concert in New York has been cancelled. So I have a request to you to cancel my existing reservation?

ASSISTANT: Sure, I will be happy to help you. Please give me a moment, I will check and revert to you.

USER: Sure.

ASSISTANT: We are very sorry to notify, there is no reservation found on your given name.

USER: Ok, no worries at all.

ASSISTANT: Thank you for availing us.

USER: Thanks for your valuable information.