You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Patrick Wright.

ASSISTANT: How may I assist you at this moment?

USER: I want to cancel my recent reservation due to cancel of my event. Could you please help me?

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

USER: Sure.

ASSISTANT: We regret to inform you that, there is no reservation found on your name in our records.

USER: No worries, thank you for the information.

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