You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help at this minute?

USER: Help me in cancel my reservation?

ASSISTANT: Ok, I am here to help you with that. May I know your good name?

USER: I am Karen Edwards.

ASSISTANT: Sorry to say that, there is no reservation found on your name in our database.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.