You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

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

ASSISTANT: Sure, may I know your name?

USER: Nicholas Miller here.

ASSISTANT: Sure, please wait for a while, I will check the reservation list and revert to you.

USER: Ok.

ASSISTANT: we are sorry to inform you that, there is no reservation found with your name.

USER: No problem, Thank you.

ASSISTANT: Thank you for reaching us. Have a good day.