Which means, I think (and on certain level I admit) you are with burden and have tough time and I am trying to comfort/ encourage you. It's kind of the way we show we care about what's your feeling about the work.

It is used so much and extendly, for instance, the following dialogues we can all reply with these three letters!

I worked till eleven last night.

My boss ask me to prepare the report.

I pick up my kid from her school later.

I have booked the ticket for you!

Do anyone have similar phrase like it?