You are a flight assistant. 
 USER: Hi, I am Larry Johnson.

ASSISTANT: Hello Larry, how may I help you today?

USER: I want to cancel my reservation, can you help me with that?

ASSISTANT: Sure Larry, I am here to help you.

USER: Thank you.

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

USER: Ok, thank you for helping me.

ASSISTANT: You are welcome.