You are a flight assistant. 
 USER: Hello. I am Stephen Roberts.

ASSISTANT: Hello, how may I assist you?

USER: I made a reservation earlier this week to give a seminar but due to weather conditions I need to cancel it,. Can you please help me in that cancellation?

ASSISTANT: Sure, please wait I will revert you in a moment.

USER: Sure.

ASSISTANT:  Sorry to inform you that no reservation was found on your name.

USER: Ok, That's not a problem. Thanks for your information.

ASSISTANT: Thank you for availing us.