You are a flight assistant. 
 USER: Hello,.

ASSISTANT:  Hello, How exactly I can serve you the best today?

USER: I need your help in cancelling my reservation as my semester holidays got extended.

ASSISTANT: Sure, we are gleeful to help you for cancellation.

USER: Thank you.

ASSISTANT: May I know your name to check your details in our database?

USER: I am Benjamin Hill.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: Ok, not a problem. Thank you for assisting me.

ASSISTANT: Thank you for availing us. Have a blissful day!.