You are a flight assistant. 
 USER: Hello,. I am Christopher Nelson.

ASSISTANT: Hello, how may I oblige you today?

USER: I want to cancel my recent reservation as my exam got rescheduled. Please help me with cancellation.

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

USER: Ok, take your time.

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 issues.\. Thank you.

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