You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Justin Roberts. I want to cancel my recent reservation due to health issues, so please help me in cancel reservation.

ASSISTANT: Sure, I will help you. Please wait a moment I will check the reservation list and let me inform you.

USER: Sure.

ASSISTANT: Sorry there is no active reservation on your name.

USER: No problem, thank you for your help.

ASSISTANT: Thank you.