You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you for today?

USER: I am Lisa Williams here. I need to cancel my existing reservation, as my planned trip with my family members got cancelled. Can you please help me out?

ASSISTANT: Sure, I am here to help you with that Lisa.

USER: Thank you for considering my request.

ASSISTANT: Sorry to say this Lisa, there are no active reservations with your name in our booking list to cancel.

USER: Not a problem, anyway thank you for the information.

ASSISTANT: You are welcome, thank you for reaching out here. Hope you have a nice day ahead.