You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may I help you?

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

ASSISTANT: Please provide your name.

USER: Sure, I am Frank Miller.

ASSISTANT: No reservation found by name Frank Miller.

USER: Ok, Thank you for your help.

ASSISTANT: Thanks.