You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Carolyn Jones. I want to cancel my recent reservation due to sudden change in the plan of my business meeting. Can you help me with that?

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: Sorry, we could not find any reservation on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.