You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Timothy Turner, I want to change my reservation. Can you please help me?

ASSISTANT: Timothy Turner, I will help you. Please allow me a minute.

USER: Sure.

ASSISTANT: I see that there are no active reservation on your name.

USER: Ok, thank you for notifying me.

ASSISTANT: Thank you for reaching us. Have a great day.