\documentclass[12pt,a4paper,figuresright]{book}

\usepackage{amsmath,amssymb}
\usepackage{tabularx,multirow,graphicx,url,wrapfig,xcolor,rotating,multicol,epsfig,colortbl}

\setlength{\textheight}{25.2cm}
\setlength{\textwidth}{16.5cm} %\setlength{\textwidth}{18.2cm}
\setlength{\voffset}{-1.6cm}
\setlength{\hoffset}{-0.3cm} %\setlength{\hoffset}{-1.2cm}
\setlength{\evensidemargin}{-0.3cm} 
\setlength{\oddsidemargin}{0.3cm}
\setlength{\parindent}{0cm} 
\setlength{\parskip}{0.3cm}

\renewcommand{\topfraction}{1}
\renewcommand{\textfraction}{0}
\setlength{\floatsep}{12pt plus 2pt minus 2pt}

\newenvironment{session}[7] % [1] session title
                            % [2] organiser name, [3] affiliations, [4] email
                            % [5] organiser name, [6] affiliations, [7] email
                            % [8] session id
 {%\needspace{6\baselineskip}
  \vskip 0pt\nopagebreak%
  %\label{#8}%
  \textbf{#1}\vspace{3mm}\\\nopagebreak%
  \ifthenelse{\equal{#5}{ }}{Organizer:}{Organizers:}\vspace{2mm}\\\nopagebreak%
  \textit{#2}\\\nopagebreak%
  #3\\\nopagebreak%
  \url{#4}\vspace{3mm}\\\nopagebreak%
  \ifthenelse{\equal{#5}{ }}{}{\textit{#5}\\\nopagebreak%
                              #6\\\nopagebreak%
                              \url{#7}\vspace{3mm}\\\nopagebreak}%
  \quad\\\nopagebreak%
  Session Description:\vspace{3mm}\\\nopagebreak%
 }
 {\nopagebreak}%

\pagestyle{empty}

% ------------------------------------------------------------------------
% Document begins here
% ------------------------------------------------------------------------
\begin{document}
	
\begin{session}
  {Session title goes here}% [1] session title
  {Name of organizer goes here}% [2] organizer name
  {Organizer affiliation(s) go here}% [3] affiliations
  {organizer email goes here}% [4] email
  { }% [5] organizer name. Leave unchanged if there is no second organizer, otherwise fill in accordingly.
  { }% [6] affiliations. Leave unchanged if there is no second organizer, otherwise fill in accordingly.
  { }% [7] email. Leave unchanged if there is no second organizer, otherwise fill in accordingly.

Your special session abstract goes here, including the list of speakers and their affiliations. Please do not use your own commands or macros.

\medskip

If you would like to include references, please do so by creating a simple list numbered by [1], [2], [3], \ldots. See example below.
Please do not use the \texttt{bibliography} environment or \texttt{bibtex} files.
APA reference style is recommended.
\begin{enumerate}
	\item[{[1]}] Niederreiter, Harald (1992). {\it Random number generation and quasi-Monte Carlo methods}. Society for Industrial and Applied Mathematics (SIAM).
	\item[{[2]}] L’Ecuyer, Pierre, \& Christiane Lemieux. (2002). Recent advances in randomized quasi-Monte Carlo methods. Modeling uncertainty: An examination of stochastic theory, methods, and applications, 419-474.
\end{enumerate}

Equations may be used if they are referenced. Please note that the equation numbers may be different (but will be cross-referenced correctly) in the final program book.
  
\end{session}

\end{document}

