You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

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

ASSISTANT: Sure, can I know your good name?

USER: I am Nicole Adams.

ASSISTANT: Please hold a moment.

USER: Ok.

ASSISTANT: Thank you for your details, there is no active reservation found with the given name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.