You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Owing to emergency I want to cancel my reservation, can you help me? My name is Gregory Taylor.

ASSISTANT: Sure, I will help you. Just hold on.

USER: Ok.

ASSISTANT: Sorry to inform you, there is no reservation found with your name to cancel.

USER: No problem. Thank you for checking.

ASSISTANT: Thank you, have a nice day.