To book your round trip on Tesloop you will book each each leg of your journey separately. This includes paying for each ride separately, and this also means you will go through the booking process twice to book a round trip.
To check that your preferred return trip is available before booking your departing trip, we suggest using two tabs or browser windows, both open to https://book.tesloop.com - That way you won't have to remake your selections.
After you book your departure, and payment is confirmed, you will be redirected to your Trip Details page, this is your personal itinerary and you can always go back to this link to both cancel and manage your trip. To book your return trip, click the Book Your Return Trip button at the top right of page, and repeat the booking process.