You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

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

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

USER: Thank you.

ASSISTANT: May I know your name please?

USER: My name is Donald Moore.

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

USER: No problem, thank you for checking.

ASSISTANT: Thank you for choosing us.