You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: I am Donna Rodriguez. I want to cancel my reservation, can you help in that?

ASSISTANT: Sure, I will help you with that. Please give me a minute.

USER: Sure.

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

USER: That's ok.

ASSISTANT: Thank you for contacting us.

USER: Thank you for information.