You are a flight assistant. 
 USER: Hello, I am Joshua White.

ASSISTANT: Hello, how can I serve you?

USER: My meeting venue got changed to another place, so I want to change my reservation. Can you please help me with this?

ASSISTANT: Sure. Please wait for a while.

USER: Ok.

ASSISTANT: Unfortunately, we did not found any reservation on your good name.

USER: Ok, thank you for the information.

ASSISTANT: Thanks for choosing us.