You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to cancel my reservation, due to an accident. Can you help me for that?

ASSISTANT: Sure, may I know your name please?

USER: My name is Lisa Jackson.

ASSISTANT: Sorry, no reservation found.

USER: It's ok. Thank you for your information.

ASSISTANT: Thank you for reaching us.