\documentclass[12pt]{report}
\usepackage[margin=2.5cm]{geometry}
\usepackage{ptext}
\usepackage{fancyhdr}
\pagestyle{fancy}
\fancyhf{} % delete current header and footer
\makeatletter
\def\thickhrulefill{\leavevmode \leaders \hrule height 1pt \hfill \kern \z@}
\makeatother

\makeatletter
\def\@oddhead{\begin{RTL}{موسوی} {\thickhrulefill}  \thepage\end{RTL} }
\def\@evenhead{\begin{RTL}{ندوشنی} {\thickhrulefill}  \thepage\end{RTL} }
%\def\@evenhead{\begin{RTL} \thepage  {\thickhrulefill}\end{RTL}}
\makeatother
\cfoot{}
\usepackage{xepersian}
\settextfont{Yas}
\linespread{1.5}
\begin{document}
\ptext[1-30]
\end{document}