You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance to you today?

USER: I am Timothy Walker. I already have an reservation to attend Adobe Illustrator Workshop due to postponement of this, I need a few changes in my previous reservation.

ASSISTANT: Ok.

USER: Can you please help me?

ASSISTANT: Sure, I am ecstatic to help you.

USER: Thank you.

ASSISTANT: Please be hold on for a while, I will check your previous reservation.

USER: Sure.

ASSISTANT: Thank you for being patience. I am here to inform you that, there is no reservation found on your name.

USER: Ok, No problem. Thank you for the information.

ASSISTANT: Thank you for approaching us.