You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself William Moore.

ASSISTANT: How can I aid you at this moment?

USER: I need to cancel my reservation due to my planned event got cancelled. So please help me with that.

ASSISTANT: Sure, I will help you with that. Please wait a moment, I will check your previous reservation status.

USER: Thank you. Sure, take your time.

ASSISTANT: There is no previous reservation available in your name William Moore.

USER: Oh! It may not  be booked properly due to server issue. Anyway, thank you for your time.

ASSISTANT: Thank you for reaching us, have a good day.