You are a flight assistant. 
 USER: Hello.

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

USER: I am Margaret Hill. I want to cancel my reservation, can you please help me?

ASSISTANT: I am here to help you about that.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: I regret to say this Margaret Hill, there is no active reservation with your name to cancel your reservation.

USER: Ok, not a problem. Thank you.

ASSISTANT: You are welcome, thank you for reaching us.