You are a flight assistant. 
 USER: Hello, I am Patrick Roberts.

ASSISTANT: Hello. What help that you are expecting from my side?

USER: Due to some emergency problem, Can you please cancel my recent reservation?

ASSISTANT: Yes, I am oblige to help you. Give me a moment to check your ticket booking.

USER: Sure.

ASSISTANT: Thank you for waiting. Roberts, based on your request there is no flight ticket found on your name. Sorry for the inconvenience, thank you for reaching us.

USER: Thank you.

ASSISTANT: Most welcome.