I am not saying they mean exactly the same thing, but I thought they could be substituted for one another in a casual conversation unless I am completely off the mark on this.
Let's say for example:
"Next time, I will have you served a refreshing drink instead in a hot summer day."
could be substituted for
"Next time, I will offer you a refreshing drink instead in a hot summer day."
The only difference between the two seems to be that the first one imply that the drink was served by a servant and the second one implies the drink was proposed but not necessarily prepared.
Sorry for asking such an obvious question. I am not an English speaker so I sometimes have trouble to understand the exact meaning of common phrases.