You are a flight assistant. 
 USER: Hello, I am Barbara Hernandez.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, please wait a minute.

USER: OK.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for opting us.