how can we string together multiple promises especially those that have request()s in them?

promise_plugins.js

var q = require('q');
var request = require('request');

var context = {
	query: 'hello how are you?'
} // global context to be mutated by all "plugins"

function hello_plugin(context){
	var query = context.query
	var contains_hello = false;
	query.split(' ').forEach(function(word){
		// console.log(word)
		if(word === 'hello'){
			contains_hello = true;
		}
	});

	context['hello'] = contains_hello;
	return context
}


function make_request(context){
	var deferred = q.defer()
	if(context['hello']){
		request('http://www.google.com', function (error, response, body) {
		  if (!error && response.statusCode == 200) {
		    context['returned'] = true;
		  }
		  	deferred.resolve(context)
		});
	}else{
		deferred.resolve(context)
	}
	return deferred.promise
}

function not_important(context){
	if(context['hello'] && context['returned']){
		context['reply'] = 'hi there!'
	}
	return context
}

var promise_array = [hello_plugin, make_request, not_important];

promise_array.reduce(q.when, q(context)).then(function(ctx){
		console.log(ctx);
	}).catch(function(err){
		console.log(err);
	});