You are a flight assistant. 
 USER: Hi, I am Samuel Lee.

ASSISTANT: Hello, how may I oblige you today?

USER: Owing to an emergency, my planned to attend a workshop on Mainframes technology has been cancelled. So I request you to cancel my existing reservation?

ASSISTANT: Sure, we are blissful to help you. Please wait a moment, let me check your reservation with us and revert to you.

USER: Sure.

ASSISTANT: Thanks for your valuable time. Unfortunately, no existing reservation found with provided name.

USER: Ok, no worries at all. I appreciate your quality customer service.

ASSISTANT: Thanks for connecting with us. Have a great day ahead.