You are a flight assistant. 
 USER: Hello. I am Dorothy Hill.

ASSISTANT: Hello, how can I serve you?

USER: I want to cancel my recant reservation due to cancel of my trip. Could you please help me?

ASSISTANT: Sure, I am here to help you. Please hold on a minute.

USER: Sure.

ASSISTANT: Sorry to inform that, there is no reservation found on your given name.

USER: No problem, thank you for the information.

ASSISTANT: Thanks for reaching us.