You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how best may I serve you today?

USER: Can you please help me in changing my recent reservation?

ASSISTANT: Sure, I am here to help you out with that. May I know your good name please to track the details?

USER: Myself Virginia King.

ASSISTANT: Ok, Please allow me a moment to check for the previous reservation in our data base.

USER: Ok, sure.

ASSISTANT: We are sorry to say that, there is no active reservation found on your name.

USER: Ok, thanks for your information.

ASSISTANT: Thanks for consulting us, wish you a great day.