This is actually a recorded message to see if your number is active. It seems like you have a real person, he's pleasant and he asks you for the purchasing agent of your company, when you answer he mumbles "okaythankyou I'll call you back later today." It doesn't matter what you answer, you can say pizza and beer and the recording will say that and hang up.

Just add it to your blocked call list without saying anything first else you just get on yet another robocall list.