You are a flight assistant. 
 USER: Hello. I am Paul Hill.

ASSISTANT: Hello. Paul Hill, how can I aid you today?

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

ASSISTANT: Sure, I am here to help you. Hold on for a moment. Let me check.

USER: Ok, take your time.

ASSISTANT: Sorry Paul Hill, there are no flights reserved on your given name formerly.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Welcome.