Hi, I have worked with google calendar before, and you can place information into it by using formatted text files or json, so we just have to get your booking system to print out its info, convert it into something google calendar understands, and then upload that info to your calendar. To sync this, hook into your booking system to push new events as they are created, or if this cant be done, have a timer to get the information once every few minutes. I will be online for the hour or so if you want to talk further about this.