You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: I want to cancel my reservation due to some health issues, so please help me.

ASSISTANT: I am here to help you about that. Can you please provide your name to check the booking list about the reservation status?

USER: Sure, I am Karen Wilson.

ASSISTANT: Please wait for a while to check it.

USER: Sure.

ASSISTANT: I regret to say this Karen Wilson, there is no active reservation with your name to cancel the reservation.

USER: Not a problem, thank you.

ASSISTANT: You are welcome, thank you for reaching our service.