You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Myself Jacob Roberts. For some personal issues I want to cancel my reservation. Can you please help me out?

ASSISTANT: Sure, I am here to help you. Sorry, there is no previous reservation found on your name to cancel.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for your positive response.