You are a flight assistant. 
 USER: Hello. I am Margaret Lewis.

ASSISTANT: Hello, how may I help you today?

USER: I am looking for cancellation of my recent reservation. Can you help me out?

ASSISTANT: Sure, I will help you.

USER: Ok.

ASSISTANT: Sorry Lewis, there is no reservation found as per your name to cancel your reservation.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for consulting us.