You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: I need to cancel my reservation as I am not feeling well due to ill health. Can you help me with that?

ASSISTANT: Ok, I am here to help you with that.

USER: Thank you for considering my request.

ASSISTANT: Could you send me your name?

USER: Sure, my name is Patrick Lee.

ASSISTANT: Ok, wait for a minute so that I will check the reservation status.

USER: Sure.

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

USER: Not a problem, anyways thank you for checking.

ASSISTANT: Thank you for approaching us.