*tel him/her where you've gone
*remind him/her to do something
*ask him/her to buy some food/drink
*wish him/her a good weekend
*say when you'll be home
*Mum, I haven't gone to library yet.
*Remember that you have do your homework.
*Can you buy my favourite cake?
*Have a nice weekend!
*I'll back at six o'clock, promise.