Open and save files with macro, with dialog box

Hi
Been lurking the board for a while now, and must say this is an awesome place to selfeducate and learn alot of tricks.

However, I have a problem that I cant find an answer to. It goes like this:

Click a button in Masterfile.xlsm -> Opens a dialog box with text "Chose file to collect data from:" -> Opens the file and copies text from a predetermined range (ie A1:C30) and paste it to another range (ie B1:D30) in the Masterfil

Also, need another button: Click the button -> Opens a dialog box with text "chose filename" -> user writes filename -> Saves the file to a predetermined path with the filename written in the dialog box

Thanks in advance!