You are a flight assistant. 
 USER: Hello, I am Daniel Evans.

ASSISTANT: Hello, how can I best serve you?

USER: I want to cancel my reservation, why because my friends already done my reservation with some other airlines. So could you please help me out?

ASSISTANT: Sure, we are here to help you out. Please wait for a second.

USER: Sure.

ASSISTANT: We are sorry to inform you that, there is no reservation found in your name.

USER: It's not a problem.

ASSISTANT: Thanks for availing us.

USER: Thanks for your response though.