You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: I want to cancel my reservation because my brother met with an accident. Can you please help me out?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: May I know know your name please?

USER: My name is William Lewis.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Sorry Lewis, there is no reservation found under your name.

USER: Not an issue and thank you very much for checking.

ASSISTANT: My pleasure, have a good day.