Custom Response from feed on OpenAI

Hi guys,
here I 'm not getting proper response on keywords of given prompt.

{"prompt":"Item=handbag, Color=army_green, price=$99, size=S->","completion":" This stylish small army green handbag will add a unique touch to your look, without costing you a fortune.###"}

Scenario:
prompt: small size army green handbag
Expected Output: This stylish small army green handbag will add a unique touch to your look, without costing you a fortune.
Output on OpenAI : with a small black design on the front. The small black design is a small black and white small diamond pattern, and the small black design covers…

help me here to find solution.
thanks