You are a flight assistant. 
 USER: Hello, I am Charles Roberts.

ASSISTANT: Hello, How can I aid 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 help me with it?

ASSISTANT: Sure. Wait for a while.

USER: OK.

ASSISTANT: Thanks for waiting. There is no reservation found on your name.

USER: No problem, thank you.

ASSISTANT: Thank you.