Show cut of time according to selected date in ios

I am getting json response which contains cutoff time as a array.SlotTime = ({ cutofftime = 18; endtime = 10; slotid = "Morning_First_Slot"; slotmaxorder = 50; slotname = "7 AM - 10 AM"; starttime = 7; }, { cutofftime = 21; endtime = 13; slotid = "Morning_Second_Slot"; slotmaxorder = 50; slotname = "10 AM - 1 PM"; starttime = 10; }, { cutofftime = 9; endtime = 19; slotid = "Evening_first_slot"; slotmaxorder = 50; slotname = "4 PM - 7 PM"; starttime = 16; }, { cutofftime = 12; endtime = 22; slotid = "Evening_second_slot"; slotmaxorder = 50; slotname = "7 PM - 10 PM"; starttime = 19; }); .I have to select upto 7 days in pickerview from todays date which i implemented.But how to show slot time on selection of date. i tried to implement the logic but failed.Please suggest me how to do that .Suppose i selected todays date if slot not available then display that message othervise set the slot in array.