You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me to cancel my reservation?

ASSISTANT: Sure, I can help you with that. May I know your good name please?

USER: My name is Linda Roberts.

ASSISTANT: Linda Roberts, there is no active reservation found under your name to do cancellation.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for choosing us.