You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you today?

USER: I am George Green. Can you please cancel my reservation, owing to an emergency?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Sorry Green, there is no reservation found as per your name to cancel it.

USER: Ok, no issue. Thank you.

ASSISTANT: You are welcome.