You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Dorothy Walker.

ASSISTANT: Dorothy Walker, how can I aid you today?

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

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

USER: Thank you.

ASSISTANT: Sorry Dorothy Walker, there are no flights reserved on your given name formerly.

USER: That's ok, not an issue. Thank you for your help.

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