You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Andrew Robinson. I want to cancel my recent reservation due to my health issue, so can you please help me with this?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Andrew Robinson, we regret to inform you that there is no reservation found on your name in our records.

USER: Not a problem, thanks for checking.

ASSISTANT: Thank you for choosing us.