If this is the case, the obvious future research suggestion that you could propose would be to examine your conceptual framework (or test the theoretical model) in a new context, location and/or culture.
For example, perhaps you focused on consumers (rather than businesses), or Canada (rather than the United Kingdom), or a more individualistic culture like the United States (rather than a more collectivist culture like China).
The focus of your dissertations was most likely a review of the literature rather than something that involved you conducting primary research.
Whilst it is quite rare for dissertations at the undergraduate and master's level to be primarily theoretical in nature like this, it is not unknown.
The nature of an investigation, its methodology or its findings can determine or alter the approach a student takes while discussing results, as can personal preferences and the guidelines provided by supervisory committees or academic and scientific departments.
There are, nonetheless, certain basic principles that remain relatively constant across scholarly writing of all kinds, including theses and dissertations, so knowing and observing them is important.
For example, a specific event (e.g., 9/11, the economic crisis) or some new theory or evidence that undermines (or questions) the literature (theory) and assumptions underpinning your conceptual framework (or theoretical model). However, if this happens, reflecting on it and re-evaluating your conceptual framework (or theoretical model), as well as your findings, is an obvious source of future research suggestions.
Reporting the Facts of Your Findings in a Thesis or Dissertation There is no doubt that the ways in which to present and organise a report of research results in a thesis or dissertation vary widely.
Identifying what these research limitations were and proposing future research suggestions that address them is arguably the easiest and quickest ways to complete the Future Research section of your Conclusions chapter.
You may want to recommend that future research examines the conceptual framework (or tests the theoretical model) that you developed.