Quote default listing change to show only for login user quote

I want to change the default listing of quote to show only for that login user quote…i check in controller file Quotes.php $quotes = $this->mdl_quotes->result(); called for show the default quote list.

I could not find further reference of $this->mdl_quotes->result(); in models file. Please help me where i can edit for that default quote list.

I will really appreciate your help.