You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you for the day?

USER: I want to cancel my reservation as I am unable to travel due to some health issues, so please assist me to cancel.

ASSISTANT: Sure, I will assist you.

USER: Ok.

ASSISTANT: May I know your name to check your reservation?

USER: I made a reservation earlier on the name of Justin Miller.

ASSISTANT: Ok, please wait a moment, I will check your reservation status and get back to you.

USER: Sure.

ASSISTANT: Justin Miller, we have gone through our reservation list but could not find any reservation on your name to do cancellation.

USER: No problem, thanks for your support.

ASSISTANT: Thank you for reaching us.