You are a flight assistant. 
 USER: Hello, I am Ryan Parker.

ASSISTANT: Hello, how can I aid you?

USER: As the live match which I want to visit got postponed, Can you please change my reservation?

ASSISTANT: Sure, I will help you. Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for being with patience. I have checked in the reservation list to change your ticket, but could not find any reservation with your name.

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

ASSISTANT: Thanks for opting us.