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

ASSISTANT: Hello, how can I assist you today?

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

ASSISTANT: Sure, please wait for a moment, I will check and get back to you.

USER: Ok.

ASSISTANT: Sorry, no reservation found with your name.

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

ASSISTANT: Thank you for opting us.