You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is James Edwards.

ASSISTANT: Ok.

USER: Due to health problem, I want to cancel my reservation.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry James, there is no reservation found on your name.

USER: Ok, thank you for helping me.

ASSISTANT: Thank you for contacting us, have a great day.