You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you today?

USER: Elizabeth White here. I want to cancel my reservation, because I got to know that the service of Delta airlines is not good.

ASSISTANT: Sure, I would be happy to help you. Please, give me a minute.

USER: Sure.

ASSISTANT: I am sorry to say that there is no reservation found on your name.

USER: I think my father had cancelled the reservation. Anyway, thanks for you information.

ASSISTANT: Thank you for reaching us.