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

ASSISTANT: Hello. How can I help you the best today?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you please help me in this?

ASSISTANT: Sure, I can help you in that.

USER: Thank you.

ASSISTANT: Please wait, let me check your reservation status.

USER: Sure.

ASSISTANT: Sorry Charles Collins, there is no active reservation on your name to cancel it.

USER: Not a problem, thank you.

ASSISTANT: Thanks for approaching us.