@ModelAttribute("availableTimes")
	public List<TimeSlot> getAvailableTimes(ModelMap model,
	        @RequestParam(value = "findAvailableTime", required = false) String findAvailableTime,
	        @RequestParam(value = "fromDate", required = false) Date fromDate,
	        @RequestParam(value = "toDate", required = false) Date toDate,
	        @RequestParam(value = "location", required = false) Location location) {

		if (findAvailableTime != null)
			return Context.getService(AppointmentService.class).getAllTimeSlots();
		else
			return null;
	}