How can I take the text of the ui-select element which allows text to be enetered manually

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AngularJs

I have a search functionality in which I have a ui select element as a search filter in a .net project with which I am using angular JS.
It is an autosuggestion control. If I select some value of the dropdown, it gets selected.
We can search the value in it(autosuggestion) by typing in the dropdown control.
What I want is if I do not select any value from the dropdown, I want the text entered in that control to be selected.
To summarize, I want the value to be selected or the text, typed in that control.
the Part of the code:

<ui-select id="wrkshpTitle" ng-model="wrkshpTitles.selectedWrkshpTitle" 
           ng-keyup="hn($select)"ng-disabled="disabled">
    <ui-select-match placeholder="No Filter">
        {{$select.selected.OfferingNme}}"<"/ui-select-match>
    <ui-select-choices when-scrolled="loadMoreRecords()" percent="70" 
                       repeat="title in wrkshpTitles|filter: $select.search">
        <span ng-bind-html="title.OfferingNme|highlight: $select.search">
    </ui-select-choices>
</ui-select>

I have used here extra "" so that I could paste the html code here.

What I have tried:

I have successfully implemented the dropdown and used the suggestions of stackoverflow and other things but to no help.