You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: I am Joseph Davis. I want to cancel my reservation as I am sick, can you please help me?

ASSISTANT: Sure, I am here to help you with that. Please wait for a minute.

USER: Sure.

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

USER: Not an issue. Anyway, thank you for choosing.

ASSISTANT: Thank you for approaching us.