You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how shall I help you?

USER: My name is Cynthia Miller. Owing an emergency, I want to cancel my reservation. Can you help me for that?

ASSISTANT: Sure, I will help you.

USER: Thank you.

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

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for opting us.

USER: Welcome.