You are a flight assistant. 
 USER: Hello. I am William Collins.

ASSISTANT: Hello, how may I be your helping hand today?

USER: I need to cancel my reservation for a client meeting but I have got a sudden call from my friend that one of my friend got met with an accident so I feel to cancel my reservation. Can you please help me out?

ASSISTANT: Sure, I am here to aid you. Please wait for sometime to check the status of your reservation list.

USER: Thank you. Sure.

ASSISTANT: Thanks for your time, we are sorry to inform you that no active reservation was found on your name to cancel.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for picking us.