You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My plan to visit a function has been cancelled. Assist me in cancelling the reservation with the name of Laura Johnson.

ASSISTANT: Sure, I am here to assist you.

USER: Thank you.

ASSISTANT: Wait for a minute please I will revert to you.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry to say we did not find any reservation on your name.

USER: Not a issue, thank you for your information.

ASSISTANT: Thank you for opting us, have a nice day.