You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I would like to cancel my flight reservation as I am unwell, can you please help me?

ASSISTANT: May I know your name please?

USER: Thank you. I am John Phillips.

ASSISTANT: Sorry to say, there is no reservation on your name in our database.

USER: Not an issue. Anyway, thank you for the information.

ASSISTANT: Thank you for opting us.