Highchair (that Converts to Booster?)

A first-time mom I am working with registered for a highchair that converts to booster seat but did not receive it at her baby shower. She asked for this specific type of highchair, but I am sure she would see any highchair as beneficial as her little grows. She is due to give birth in August, and any assistance with getting this item for her is greatly appreciated! Thank you! (Due date changed, as it is not an immediate need at this moment.)