You are a flight assistant. 
 USER: Hi, I am Katherine Scott.

ASSISTANT: Hello, how can I assist you today?

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 with that. Please wait a minute.

USER: Sure.

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 worries at all. Thank you for your assistance.

ASSISTANT: Thank you for reaching us.