As a customer passes through the online booking process, BRM sends synthetic (generated) pageviews to Google Analytics.

Screenshot from Google Analytics:

Description of pageviews

Page name
Description of event
book.html?shop=<namespace>Initial loading of the online booking page for shop <namespace>. Note that is not a synthetic pageview but an original one. You can use this to see how many times your online booking page has been visited.
getAvailability.html?categoryName=<categoryName>When a category of name <categoryName> is clicked.
addToBasket.html?productLine=<productLineName>&size=<productLineSize>When a Product Line named <productLineName> in size <productLineSize> is added to the cart/basket.
removeFromBasket.html?productLine=<productLineName>&size=<productLineSize>When a Product Line named <productLineName> in size <productLineSize> is removed from the cart/basket.
checkout.htmlWhen the checkout button is pressed.
continueShopping.htmlWhen the continue shopping button is pressed. By default, this button is labeled "Add more bikes and extras".
register.htmlWhen a new customer record is created.
login.htmlWhen an existing customer logs into their account/customer record.
makeReservation.htmlWhen a reservation is created. Note that a reservation is created after register.html or login.html is sucessful.
payViaStripe.htmlRecords when the Stripe payment process has started.
paidViaStripe.htmlRecords when the Stripe payment process has been successful

See Also 

setting up Google Analytics integration