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. Could you please help me out?

ASSISTANT: Sure, for that I need to know your name. Can you please provide me?

USER: Sure, I am George Collins.

ASSISTANT: Ok, please give me some time I will check and revert you.

USER: Ok.

ASSISTANT: Unfortunately there is no reservation found by this name.

USER: Ok, not a problem. Thanks for your effort.

ASSISTANT: Thanks for your service.