You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Due to inconvenience of my work, I want to cancel my reservation. Can you please help me for that?

ASSISTANT: May I know your name please?

USER: My name is Dorothy Hernandez.

ASSISTANT: No reservation found as per your preferences in our database.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for choosing us.