You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you for today?

USER: Due to heavy snow fall, I want to cancel my reservation. Can you help me out?

ASSISTANT: Sure, I will help you about it.

USER: Ok.

ASSISTANT: Can you please provide me the name on which previous reservation is done?

USER: Myself Nicholas Martinez.

ASSISTANT: I have checked in our database under your name but I can not find any previous reservation under your name.

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: Thank you for selecting our service. Hope you have a great day ahead.

USER: Welcome.