"Bij" appears with verbs for topping up, keeping up, or coming back to your senses — in a main clause it splits to the end ("Ik vul mijn glas bij"), in a subclause it stays attached.
Gastheer: ?
Gast: , .
Collega: . .
Receptionist: .
Gast: Graag, maar een klein beetje maar.
Yes please, but just a little.
Vul het ontbrekende woord in:
The printer is showing an alert. I think we need to refill the paper.