Customizing X-Axis

Hi Everyone!
I want to customize my X Axis to display the specific dates I have listed in my data table. I have tried changing the bounds and units to get it to align exactly how I want, but I am not having any luck. The data I am presenting is the cumulative hours worked on the 15 and end of each month. I want the data set to start at my beginning date and end at my end date, and only display the dates I am reporting on, not a average. It's really a very simple graph I just don't have a lot of experience with graphs, and for all I know it's just something that's not possible. I have attached a copy of the graph with the data. Any help would be greatly appreciated!