You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I need your help in changing my recent reservation details, as I have given wrong details in it. Will you please help me with that?

ASSISTANT: Sure, please hold on for a moment, let me check. Can I know your name please?

USER: Sue, I have done my previous reservation by the name Nancy Lopez.

ASSISTANT: I am sorry, there are no reservation with your name.

USER: Oh! That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you, have a good day.