You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my recent reservation, due to some health issue. Can you help me?

ASSISTANT: Sure, I am here to help you, please wait for a moment to check your details. May I Know your name?

USER: Thank you. Yes, I am Brian Anderson.

ASSISTANT: Sorry to say, no reservation found on your name.

USER: Ok, not an problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.