You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Usually I prefer a connecting flight, but unfortunately my friend have already reserved my ticket with a direct flight. So, I want to change it. Can you please change my reservation?

ASSISTANT: Sure, Can I have your name please?

USER: Sure, I am Jonathan Thompson.

ASSISTANT: There is no reservation found with your name.

USER: Ok. Thank you for your service.

ASSISTANT: Have a good day.