What is the first name of the person who Gavin tries to brush off with a blank check?  Answer the above question based on the context below:  In New York City, a middle-aged black insurance salesman named Doyle Gipson is a recovering alcoholic who is attending Alcoholics Anonymous meetings to stay sober. On the same morning that Gipson drives to a hearing to try to regain custody of his children, a successful, white, young Wall Street attorney, Gavin Banek, is distracted while driving and collides his new Mercedes CLK320 with Gipson's older Toyota Corolla. Banek was in a rush to get to court to file a power of appointment document, which will prove a dead man signed his foundation over to Banek's law firm. Gipson was also in a rush to get to a hearing to argue for joint custody of his sons with his estranged wife. Banek tries to brush Gipson off with a blank check, rather than exchanging insurance information, thereby disobeying the law. Gipson refuses to accept the check and voices his desire to "do this right", but Banek, whose car is still drivable, insists upon leaving immediately.  He leaves Gipson stranded, telling him, "better luck next time". After arriving to the court late, Gipson learns that the judge ruled against him in his absence, giving sole custody of the boys to Gipson's wife and allowing her to proceed with a plan to move to Oregon, never knowing that Gipson was about to buy a house locally and give it to his wife and children as part of his effort to make joint custody workable for everyone.
Doyle