Question about real estate agents

[Will Bert]

I'm in the market to but a lot 2 family house. I seen a property that my agent sent me... I drove by the property and the owner was outside so I spoke to the owner and they like me and offered  to sell me the house at a cheaper price than it was listed I just asked what was the absolute lowest they would go and I'm willing to sign the contract right then..When I called my agent & said what happen she said she would contact the sellers agent...the sellers agent said he would not accept that low of an offer and that the owner is getting alsheimer ... so he didn't put the offer in and will continue to show it..is there a specific a law regarding him not giving the offer to the seller