Two TextBox and a Button AngularjS

I have two textboxes one is Snumber and another dNumber and one FIND button. What I want is if I am entering sNumber, then button click goes to a page and if I enter dNumber then button click go to another page. How can this be done in AngularJS?

             

                 <div class="form-group">
                                 <label class="control-label">S Number</label>
                                 <div class="form-group">
                                    <input type="text" class="form-control"  data-ng-model="sNumber" >
                                 </div>
                              </div>
                              <div class="form-group">
                                 <label class="control-label">D Number</label>
                                 <div class="orm form-group">
                                    <input type="text" class="form-control" data-ng-model="dNumber" data-ng-maxlength=20 data-ng-minlength=5  required>
                                 </div>
                              </div>
                           </div>
                        </form>
                        <div class="form-actions">
                           <a data-ng-href="#/sDetailsList/{{sNumber}}" class="btn btn-lg green" >Find Data(s)</a>
			   <a data-ng-href="#/dDeatilsList/{{dNumber}}" class="btn btn-lg green" >Find Data(s)</a>
			</div>

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