Help with Trenitalia

I I I assume you are looking at train 780, and it does not have couchettes. You can find this information on the trenitalia.it website - first you 'select' the train by ticking the 'seleziona' box and then you ask for 'dettagli per selezione'. It is quite clear that this train is seats only.

  24 hours on, I realise that I had put a 'theoretical' date into my search. It could be that on some days (of the week, month, I dunno) the train 780 just might have a couchette carriage. Maybe (you know it could make sense) - on a Friday or Saturday or maybe a Sunday, Trenitalia might attach a couchette carriage to that train. So, search on the date you want to travel - and if the site still says no couchettes, believe it.

 Thanks to everyone for the advice.....being rather nieve I thought that all ICN trains had couchettes as described on the website, but thinking about it they would need an awfull lot of them wouldn't they ? I'll try not to be so dense in the future !