You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: There is art museum in Chicago but due to some reason I can not go, Can you change the reservation to other day?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your good name?

USER: Sure, you can check my reservation on the name of Jeffrey Jones.

ASSISTANT: Please wait for a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry, we found no reservation on your given name.

USER: That's Ok, thanks for your help.

ASSISTANT: Thank you for reaching us.