You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Owing to an emergency I want to cancel my reservation, can you help me?

ASSISTANT: Sure, I will help you. Could you please provide your name to check your previous reservation status?

USER: Myself Michael Lee.

ASSISTANT: Ok Lee, please hold on.

USER: Sure.

ASSISTANT: Sorry to inform you that, there is no reservation found with your name in our records.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us, have great day.