Ask for help:
1) If I have lost my luggage, I would have called the police or security
2) If my car broke down, I would have turned into a workshop
3)If I do not know how to go to the bank, then I'll ask for directions from a passerby
Offer help:
1)I would help my colleague to explain something that is not understood his visitor
2)If the visitor does not phone, then I will give him his
3)I would help him find his way to or accompanied him to the house