as‧sist‧ance S3 W2 [uncountable]
offer/provide/give assistance (to somebody)
We offer financial assistance to students.
Technical assistance for the product is free of charge.
Can I be of any assistance (=can I help you)?
with the assistance of somebody/something
We've only been able to rebuild the theatre with the assistance of the National Lottery.
One of her fellow passengers came to her assistance (=helped her).