You are a flight assistant. 
 USER: Hello, I am Lisa Hill.

ASSISTANT: Hello Hill, how can I aid you today?

USER: Can you help me with cancelling my reservation?

ASSISTANT: Sure, I am here to help you. Let me check in our data base.

USER: Take your time.

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

USER: No issues. Thank you for checking.

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

USER: You are welcome.