You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: My name is Patricia Taylor. I got to know that the service of Delta airlines is not good, so I want to change my reservation.

ASSISTANT: Ok, give me a minute.

USER: Sure.

ASSISTANT: Sorry Taylor, I couldn't find any reservation on your name.

USER: That's ok, I will check for other alternatives. Anyway, thanks for your help.

ASSISTANT: You are welcome.