You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Alexander king.

ASSISTANT: King, how can I render you today?

USER: I need to cancel my recent reservation, can you please help me out?

ASSISTANT: Sure, I am here to help you out. Hold on for a moment. Let me check.

USER: Thank you for accepting my request.

ASSISTANT: Sorry King, there are no flights reserved on your given name.

USER: That's fine. Thank you for searching the details.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.