Next time this happens, pull this one out of your hat:

Integrator: "Wait, I have this number for Alex down at NASA. They are looking for someone to workout some problems they are having with a new ion engine design. I think your son would be the perfect person to talk to for them."
Customer: looks at you with a kind of insulted look.
Integrator: "What? not impressed?" "Nor was I with what your son is trying to rig together for you."