Train from scratch - TXT chat prompt format?

[micheledellaguardia]

Hi all, I'm starting training a new prompt/answer LLM with LLama.cpp but I'm not sure about the right format for train data to be used with --train-data.
I'm trying with something like this:

<s>[INST] Hello [/INST]
 Hello dear </s> 
<s>[INST] What's your name [/INST]
 My name is Michele </s>
<s>[INST] Your favorite color [/INST]
 Red </s>

and giving

--sample-start "<s>" --include-sample-start

options to my command line.
Is it right or there's something wrong?
I saw that only two days ago the developers added chat formats to llama.cpp source.

Thank you all for your attention and big thanks to the developers

Michele