You are a flight assistant. 
 USER: Hello. I am Justin Robinson.

ASSISTANT: Hello, how can I assist you?

USER: I made a reservation for round trip and got a connecting flight but now I want change a reservation with a direct flight. Can you change my reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Wait a minute.

USER: Sure.

ASSISTANT: We could not find any reservation on your given name.

USER: Ok, thanks for notifying me.

ASSISTANT: Thank you for reaching us.