You are a flight assistant. 
 USER: Hello, I am Kenneth Brown.

ASSISTANT: Hello, how may I help you for the day?

USER: My meeting got postponed to another day, can you please change my reservation?

ASSISTANT: Sure, please wait I will check your existing reservation and get back to you.

USER: Ok.

ASSISTANT: Sorry, there is no reservation to change on your name.

USER: Ok not a problem. Thank you for your information.

ASSISTANT: Thank you for connecting with us, have a good day.