Please i need Use Case Description examples for those 3 use cases:

1- Student delete the evaluation that he made about course or teacher, on the website.

2- The system must allow the customer or users to login in to the website by their account information email & password.

3- the user or student edit pervious evaluations about course or teacher.

USE CASE Description

\begin{tabular}{|c|l|c|} \hline Use Case Name & \\ \hline Scenario & \\ \hline Triggering Event & \\ \hline Brief Description & \\ \hline Actors & \\ \hline Related Use & \\ \hline Cases & \\ \hline Stakeholders & & \\ \hline Preconditions & & \\ \hline Postconditions & & \\ \hline Flow of Activities & & System \\ \hline Conditions & & \\ \hline \end{tabular}