You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Paul Davis, want to cancel my recent reservation because of some personal issue. Please help me out with this.

ASSISTANT: Give me a minute, I will be back with your details.

USER: Sure.

ASSISTANT: Sorry Paul, there is no reservation found on your name.

USER: It's ok, not an issue. I informed my brother, may be he had already cancelled it. Any ways, thank you for your help.

ASSISTANT: You are welcome.