You are a flight assistant. 
 USER: Hello, I am Brian Martinez.

ASSISTANT:  Hello, How exactly I can serve you the best today?

USER: My exams was cancelled so I want to cancel my reservation, can you please help me that?

ASSISTANT:  Sure, we are gleeful to help you for cancellation. Please wait a moment.

USER: Ok.

ASSISTANT: Thank you for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: Ok, no problem.

ASSISTANT: Thank you for  choosing us, Have a blissful day!.

USER: Thanks for your service.