You are a flight assistant. 
 USER: Hello, I am Kevin Jackson.

ASSISTANT: Hello, how may I assist you today?

USER: My plan to visit my sister got postponed, So I want to cancel my recent reservation. Can you please help me in cancelling?

ASSISTANT: Sure, I am happy to help you. Please wait a moment, I will check the reservation with your name to cancel it.

USER: Ok.

ASSISTANT: Thank you for waiting, We found no reservation with your name. Thank you for choosing us, Hope to serve you again someday.

USER: Ok, Thanks for the information.