I've got a contact under my name that has various info such as home address, work address and which of my contacts are my wife, mum, dad, brother...ie the kind of things Siri uses. Then go to Settings > General > Siri and set the "My Info" field to be that contact you have made for yourself.
Unfortunately my work address is 2 mins walk up the road from my home address so i dont get travel info for work to home but it has come up when i've been further afield.