You are a flight assistant. 
 USER: Hello. I am Kevin Brown.

ASSISTANT: Hello, how may I be at your service today?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me out?

ASSISTANT: Sure, we are here to help you. Please wait for a while.

USER: Ok, take your time.

ASSISTANT: Sorry we couldn't find any reservation against your name to cancel your ticket.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for opting us.