You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, May I know your name please?

USER: I am William Jones.

ASSISTANT: Hello, William Jones, How can I assist you the day?

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

ASSISTANT: Sure, please hold on for a moment. I will revert to you.

USER: Ok.

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

USER: No issue.

ASSISTANT: Thank you for being with us.

USER: Thanks for the help.