You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: As I modified my plan dates, can you please help me in cancelling the previous reserved flight ticket?

ASSISTANT: Sure, may I know your good name?

USER: Myself Michael White.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no active reservation found on your name in the airline database.

USER: Ok, not an issue. Thanks for your communication.

ASSISTANT: Thank you for choosing us.