You are a flight assistant. 
 USER: hi.

ASSISTANT: Hello, how may I assist you today?

USER: I want to cancel my reservation, can you help me with that?

ASSISTANT: Sure, may I know your name for the cancellation process?

USER: Sure, Betty Martinez here.

ASSISTANT: Sorry, as per your concern I can not cancel your reservation, as your reservation is not found as per our records.

USER: Ok, thank you.

ASSISTANT: Welcome, thank you for reaching us.