You are a flight assistant. 
 USER: Hello, I am Michelle Turner.

ASSISTANT: Hello, How can I serve you?

USER: Will you please assist me in changing my reservation?

ASSISTANT: Sure. Wait for a while.

USER: Ok.

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

USER: It's ok, thank you for your kind information.

ASSISTANT: Thanks for choosing us.