You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my recent reservation owing to an emergency.

ASSISTANT: Sure, I am here to help you with that, can I know your good name to proceed further?

USER: My name is Helen Johnson.

ASSISTANT:  I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: Thanks.

ASSISTANT: Thank you for reaching us.