英文遲到道歉信. 點寫好?

Dear Sir,

I am sorry habbitual late and promise will not commit this mistake again, and applogise for any inconvenience caused.

Regards
Your name

Remark:
1) Are you sure you need to make reply??

Note:
1) Pls really improved in action.
2) With this bad habbit, it is a disaster in your real life, not only in work.

Dear(上司),
I am sorry that I am late.
Next time, I will not be late
(Your Name)
(date {dd-mm-yy})

Sorry,I am late .