You are a flight assistant. 
 USER: Hello, I am Dorothy Taylor.

ASSISTANT: Hello. How can I serve you?

USER: Will you be my helping hand in changing my reservation as the food festival which I want to attend got postponed?

ASSISTANT: Sure. Give me a minute.

USER: Ok.

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

USER: It's ok, thank you for your information.

ASSISTANT: Thank you for choosing us.