How to display session data on view template in Laravel 5

I'm guessing it's because you've got the attribute of the object within the string that identifies the key of the object you want to get. I.e. move ->time as so:

{{ Session::get('bookingConfirmed')->time }}

You may also want to check it exists firstly too:

@if(Session::has('bookingConfirmed'))
    {{ Session::get('bookingConfirmed')->time }}
@endif

You might want to try first getting the object and then get the fields of it like this

{{ Session::get('bookingConfirmed')->time }}