You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Margaret Lewis, I want to cancel my reservation. Can you please help me out?

ASSISTANT: Sure Lewis, I will help you.

USER: Thank you.

ASSISTANT: Sorry Lewis, no reservation has been found on your name in our database.

USER: No problem, thank you for the information.

ASSISTANT: You are welcome.