I believe your Jazz has a kerb weight of 1155kg. Honda quotes an maximum towing capacity of 1000kg but it's advised that you shouldn't tow more than 85 per cent of the kerb weight - so that's 981kg. Most caravans are heavier than this, unfortunately - especially by the time you've added your personal goods to the caravan. Take a look at lightweight caravans such as those made by Teardrop.