I have a veeery long Word document (over 6000 pages) with messages that have been exported from a phone. It looks like something like this:

Date: 5.4.2020. 19:23:54

From: Person A (+3XXXXXXXX)

Text message from person A to person B

Date: 5.4.2020. 19:23:55

To: Person B (+3XXXXXXXX)

A very long text message message from person B to person A which may run over in several lines and the text box would be able to adapt and allow the text to be placed inside without having to expand it manually…

I would like to organize these messages into text boxes to make them look more like messages on a mobile phone but to do that I would have to select each block of text and put it into a text box MANUALLY which is simply not possible due to time constraints I have at the moment. Again, this is a document with over 6000 pages, it would take forever.

My question is this… Would it be possible to select the blocks of text using a key word (in this case maybe To and From or Date) and to select text from that word up to the end of the text message and then format that selection into text boxes? In Word there is even a template for a text box that looks a lot like a message box on the phone which I would like to use (Insert-Text Box-Simple Quote). I would like the text in them to be aligned to left as well and the boxes themselves aligned to the left side of the page. If I could make them run in two columns it would be amazing!

So, from this…

enter image description here

… to this.

enter image description here

I have to note that this is the first time I am faced with a problem that requires a solution of this kind so please be patient with me, I am a complete noob about this… Thank you so much for the help!

P.S. I tried with Styles but it is too time consuming and the results are not good, it does not look anything like text boxes on the phone.
I tried with copy-pasting into the text boxes manually but gave it up really fast, it would take me a lifetime to finish (again, the document is over 6000 pages long!) and the possibility of an error is astronomical given the sheer amount of data…