Now for the choice, right click somewhere in the right window, select Add => Choice. A window like the one below will pop up, this is the window will you will configure your choice.

This window really isn't to complicated, there are basicaly only two options available when you first go into it, Add Choice which adds a choice, and Clear screen before displaying choices which will clear the last line of speech from the window before the player is presented with the choices. So, click on Add Choice and you will get this window.

There are 3 tabs in this window, for now, we just need to worry about the "General" tab but the other two tabs are used to cause the choice to appear only when certain conditions are met (flags will be covered in another tutorial)
The first thing we need to do is type something into the Choice Text dialogue box, this is the speech that will show up that you can choose during the conversation. So In the Choice Text box type: Alright, alright, I'll leave.
The Audio File text box can be ignored, even if you are putting audio into the conversation you can still ignore this box.
The last text box, Jump To Label is very important, this box tells the conversation where to go if the player chooses this choice, I know it sounds a bit confusing, but you'll understand in a bit. So type "choice1" into this box. It should now look like this:

At the bottom of the window there is a check box that says Display Speech As Text When Selected this box is pretty much self explanitory but I feel I should explain it anyway, basically if it is checked (and it is by defult) when the player selects the text as his choice it will display the choice on the screen as if it where just a normal part of the conversation (also hard to explain but you can try checking and unchecking it to see for yourself)
Click OK and you will see that your choice has been added to the Choice window, but, if we actually want the player to have a choice we have to put more than one, so click "Add Choice" again and add a new choice like the one below:

Now click update and you will see your choices added to the right frame. Right now, the choices event will be colored red, red it not a good color in ConEdit, but don't worry, we'll fix that. The reason that they are red is because of the "Jump To Lables" that we set. These lables don't yet exist, so the conversation has nowhere to go if the player picks a choice. As far as this section of the conversation goes, it is over, so you can also add an End event just like below.

Now we must create the speach that will come up when a player chooses a specific choice. Right click and open the add speech event window. At the very top of the window you should see a text box labled "Event Label" If the player's choice has the same "Jump To Label" as this then the conversation will go here.
Type "Choice1" into this box, that will cause the conversation to jump here if the player chooses "Alright, alright, I'll leave." Which if you remember, has its Jump To Label set as "Choice1" That is all you have to do to make the conversation jump here so in the speech box we have to put something that is appropriate. Make sure all your boxes are filled in like below and make sure that the Cop is speaking to JCDenton.

Now press Update to add the Speech event to your conversation. Also, add an End event right after the Speech so that the conversation will end and not just continue right into the the next part.

Now all that remains is to add the speech for the second choice. Open up the Add Speech event window and this time type "choice2" into the Event Label box. Fill in the speech like below, again making sure that the Cop is talking to JCDenton.

Press Update to add the Speech to the conversation. You will now notice that the speech event is colored a nice normal blue color. That is because both of the Jump To labels now exist, which is a good thing. Make usre to add an End event. That's it for the conversation, make sure that it looks like the once below.

Now, fire up the conversation and start choosing! Note: If you don't know how to put the conversation into your level, read the Basic Conedit tutorial.