You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I am Ronald Hernandez.

ASSISTANT: Ok.

USER: Can you please help me to cancel my reservation as my meeting got postponed?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Sorry Ronald Hernandez, no reservation found on your name in our data list.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us, have a nice day.