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

ASSISTANT: Hello, how may I assist you?

USER: I want to cancel my ticket due to tsunami threat going on in the place I wanted to visit. Can you aid me?

ASSISTANT: Sure, hold on for a moment. Let me check.

USER: Thank you. Take your time.

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

USER: No issues. Thank you for checking.

ASSISTANT: Welcome. Thank you for choosing us.

USER: You are welcome.