You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I want to cancel my recent reservation due to as my plan to give a seminar is cancelled. Can you help me in cancellation?

ASSISTANT: Sure, I am here to help you out. Please wait for a while.

USER: Ok.

ASSISTANT: May I know your name to check with it?

USER: I am Joseph Baker.

ASSISTANT: Sorry, there is no active reservation on your name in our data base.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.