You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am James Williams.

ASSISTANT: How can I help you?

USER: I need to cancel my recent reservation due to cancel of my seminar. Could you please help me?

ASSISTANT:   Sure, I am here to help you. Please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a reservation on your name and your ticket has been cancelled as per your request.

USER: Thank you for your assistance.

ASSISTANT: Thank you for opting us, have a good day.