You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, we are here to help you. May I know your name please?

USER: Thank you for your response, I am Raymond White.

ASSISTANT: Sorry to inform you that there is no active reservation on your given name.

USER: It's ok, thank you.

ASSISTANT: Thank you for contacting us.