You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, we are glad to serve you.

USER: I am Carol Adams. I just want to cancel my reservation can you please help me.

ASSISTANT: Sure, please wait for a while, let me check and revert to you.

USER: OK.

ASSISTANT: Thanks for holding on, sorry, no reservation found with provided name.

USER: Thank you for your information.

ASSISTANT: Thanks for your assistance, I appreciate your service.