You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: Due to health problems I need to cancel my recent reservation, can you help me for cancel my reservation.

ASSISTANT: Surely, I will help you. May I know your name please?

USER: I am Kathleen Roberts.

ASSISTANT: Sorry, No reservation found on your name. Thank you for choosing us.

USER: Thanks for your information.