You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Cynthia Johnson here.

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

USER: Ok, thank you.

ASSISTANT: Thanks for contacting us.