You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: William Perez here.

ASSISTANT: Yes Perez, how can I assist you today?

USER: I just want to cancel my recent reservation, as my visiting location is completely destroyed by floods. So please help me in cancelling my recent reservation?

ASSISTANT: Sure, I'll definitely help you with that. Please be on hold for few couple of seconds while I'll check your reservation status.

USER: Ok, take your own time.

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

USER: Oh! It's not a problem, may be my friend has already cancelled it. Thank you for giving me information.

ASSISTANT: Welcome, thank you for utilizing our service.