You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. how can I serve you?

USER: I am Katherine Collins. MY business meeting venue got changed to client's place, can you please change my reservation?

ASSISTANT: Sure. Wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting. There is no reservation found on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.