You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Margaret Robinson here. I want to cancel my recent reservation which I have done earlier, due to bad health condition. Can you help with it?

ASSISTANT: Sure, I will help you in cancelling the reservation.

USER: Thank you.

ASSISTANT: Sorry, there are no reservations found.

USER: Ok, not a problem. Anyways, thanks for the information.

ASSISTANT: Thank you for reaching us.