How to implement google place autocomplete hints for a specific city?

Question

JavaScript

Hello !
I am developing a taxi application. You need to do a search (where to go) with hints google place autocomplete. The problem is that I can not set the search boundary within the city (For example: Moscow). With the help of bounds, everything works, but when searching, addresses in other cities (St. Petersburg, etc.) are also given, but I only need in Moscow.
I will give the code working on bounds but without exact boundaries:

navigator.geolocation.getCurrentPosition(function(position) {
                
                new google.maps.Geocoder().geocode( { 'latLng': new google.maps.LatLng(position.coords.latitude, position.coords.longitude) }, function(results, status) {
                  if (status == google.maps.GeocoderStatus.OK) {
                      
                    angular.forEach(results[0].address_components, function(value, key) {
                      if(value.types[0] == "locality"){
                        new google.maps.Geocoder().geocode( { 'address': "Черкесск" }, function (results_locality, status) {
                            var bounds = JSON.parse(JSON.stringify(results_locality[0].geometry.bounds));
                            autocomplete.setBounds(new google.maps.LatLngBounds(
                                new google.maps.LatLng(bounds.south, bounds.west),
                                new google.maps.LatLng(bounds.north, bounds.east)
                            ));
                        });
                      }
                    });
                    
                  } else {
                    console.log("Geocode was not successful for the following reason: " + status);
                  }
                });
                
            },function(error){
                console.log(error);
            });

How to implement it?