You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Due to some health issue, I would like to cancel my reservation. Can you please help me?

ASSISTANT: Sure, I will help you. May I know your name?

USER: Sure, my name is Carol Young.

ASSISTANT: Sorry Young, there is no reservation found with your name to cancel the reservation.

USER: That's fine, thank you for checking.

ASSISTANT: Thank you for opting us.