HERE Location Services on Amazon Web Services

 'use strict';

 const request = require('request');

 function formatResponse(sessionAttributes, fulfillmentState, assetType, region, regionFound) {

     var messageText;

     if(region != regionFound){
         messageText = `We did not find a ${assetType} in ${region} but we did find one in ${regionFound}`;
     }else if (region == regionFound)
     {
         messageText = `We have found 1 ${assetType} in ${region}`;
     }

     var message = {'contentType': 'PlainText', 'content': messageText};

     return {
         sessionAttributes,
         dialogAction: {
             type: 'Close',
             fulfillmentState,
             message,
         },
     };
 }

 // replace with internal system call that gets realtime GPS coordinates for a given assetType
 function findAssetLocationByAssetType(assetType) {
     var assetLatLong;

     switch(assetType) {
       case 'helicopter':
         assetLatLong = '47.679506, -122.387584';  // ballard
         break;
       case 'bulldozer':
         assetLatLong = '47.570186, -122.386759';  // west seattle
         break;
       case 'delivery vehicle':
         assetLatLong = '47.603980, -122.335579';  // downtown
         break;
       case 'boat':
         assetLatLong = '47.608291, -122.338056';  // downtown
         break;
       default:
         assetLatLong = null;  // for demo purposes we only, no error handling
     }

     return assetLatLong;
 }

 // --------------- Events -----------------------

 function dispatch(intentRequest, callback) {

     const sessionAttributes = intentRequest.sessionAttributes;

     console.log(`dispatch userId=${intentRequest.userId}, intentName=${intentRequest.currentIntent.name}`);

     const intentName = intentRequest.currentIntent.name;
     const slots = intentRequest.currentIntent.slots;
     const region = slots.slotOne.toLowerCase();
     const assetType = slots.slotTwo.toLowerCase();

     var proximity = findAssetLocationByAssetType(assetType);
     var layerIds = '1001';

     const url = 'https:https://fleet.ls.hereapi.com/2/search/proximity.json' +
                 '?apiKey=<YOUR_API_KEY>' +
                 '&proximity=' + proximity +
                 '&layer_ids=' + layerIds +
                 '&key_attribute=NAME';

     request(url, { json: true }, (err, res, body) => {

                     if (err) { return console.log('err: ', err); }

                     console.log('statusCode:', res && res.statusCode);
                     console.log('body: ', JSON.stringify(body));

                     // process response
                     var regionFound = body.geometries[0].attributes.NAME.toLowerCase();
                     var distance = body.geometries[0].distance;

                     var formattedResponse = formatResponse(sessionAttributes, 'Fulfilled', assetType, region, regionFound);

                     callback(formattedResponse);
                 });
 }

 // --------------- Main handler -----------------------

 exports.handler = (event, context, callback) => {
     try {
         dispatch(event,
             (response) => {
                 callback(null, response);
             });
     } catch (err) {
         callback(err);
     }
 };