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: Sure, may I know your name please?

USER: Sure, Gary Parker here.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there was no reservation found with your given name.

USER: Ok, Thank you.

ASSISTANT: Thank you for opting us.