You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need to cancel my recent reservation, can you please help me?

ASSISTANT: Sure, we are glad to serve you.

USER: Ok.

ASSISTANT: Before proceeding to cancel your flight reservation. May I know your name please?

USER: Myself Karen Jones.

ASSISTANT: Sorry Karen Jones, based on your name we haven't found any previous flight reservation in airline database.

USER: That's ok, thank you for the information.

ASSISTANT: Thanks for approaching us.