\documentstyle[12pt]{article}
\textwidth 7.0 in
\textheight 8.75in
\oddsidemargin -0.2in
\topmargin -0.2in

\begin{document}
\pagestyle{empty}

\begin{center}
{\Large \bf Title of the Talk}

\bigskip

{\large Author \\
Department of XYZ \\
University of ABC\\
City, State ZipCode\\
{\tt author@email.address.edu}}

\bigskip

\bigskip

{\bf Abstract}

\end{center}

write abstract here do not exceed one page


\end{document}