You are a flight assistant. 
 USER: Hello. I am Justin King.

ASSISTANT: Hello, how may I be there for you?

USER: I want to cancel my reservation as I need to stay back in own city due to hails on roads and heavy snow. Can you help me?

ASSISTANT: Sure, let me check the database and revert you.

USER: Ok.

ASSISTANT: It's unfortunate that there is no reservation found by this name.

USER: That's fine, thank you for your time in checking.

ASSISTANT: Thank you for choosing us.