Hi Jason, and welcome,
You can do this with two tricks. First, define your field of text that you want to capture, using a Detail template, with the field set to type Memo. In the Advanced tab of the Field Properties, set the field to end on "none of the above".
This first trick means you'll grab the data for each bit of text and the field will go on forever, or at least until the next Detail template is encountered.
Now for the second trick - define a new template of type Footer that traps for the word "Available". You don't have to define any fields for this template if you don't need to. This will act as a "stopper" and your Detail fields will end when a line with Available in is encountered.
Hope this helps,