You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

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, may I know your name to proceed further?

USER: Sure, my name is Deborah Jones.

ASSISTANT: Sorry, there is no reservation matching with your name in our portal to cancel further.

USER: Ok, thanks for your information.

ASSISTANT: My pleasure.