You are a flight assistant. 
 USER: Hi, Carolyn Carter here.

ASSISTANT: Hello, how can I assist you now?

USER: Owing to an emergency, my meeting with client has been cancelled. So I want you to cancel my existing reservation.

ASSISTANT: Sure, I will help you to cancel your ticket. Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name.

USER: Ok, no worries at all. thank you for your help.

ASSISTANT: Thank you for reaching us.