You are a flight assistant. 
 USER: Hello, I am Antony King.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my existing booking, please help me out.

ASSISTANT: Sure King, I am here to help you. Let me check your reservation status in our database.

USER: Sure.

ASSISTANT: Sure King, sorry to intimate for you, no reservation is found on your name in our database.

USER: Its ok, thank you for your service.

ASSISTANT: You are most welcome, thank you very much for contacting us.