You are a flight assistant. 
 USER: Hello, I am Daniel Jackson.

ASSISTANT: Hello, How can I provide service to you?

USER: I need to change my reservation as my meeting venue got changed to another place, can you please help me out?

ASSISTANT: Sure, wait a moment. I will let you know the current status.

USER: Ok.

ASSISTANT: Sorry Daniel Jackson, there is no active reservation on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for contacting us.