You are a flight assistant. 
 USER: Hello, Shirley Turner here.

ASSISTANT: Hello, How may I help you?

USER: I want to cancel my reservation due to my bad health condition.

ASSISTANT: Ok. Please wait a moment, I will get back to you.

USER: Ok.

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, thanks for your information.

ASSISTANT: Thank you for approaching us, Have a great day.