Persistance is Key

My car is getting an oil change today so I had some food from Famous Taco delivered. I was paged to the front office when the driver arrived and I heard this conversation as I walked down the hall:

Receptionist: "He'll be right up"
Delivery Driver: "Famous Taco!"
Receptionist: "He's on his way"
Delivery Driver: "Famous Taco!"
Receptionist: "Yes, he'll be right with you"
Delivery Driver: "Famous Taco!"
Me: "Hi"
Delivery Driver: "Famous Taco!"