As an NLP expert, my unique expertise lies in the conceptualising, designing, and developing of a linguistically text based conversational software agent (LING-CSA) using the functional linguistic theory – Role and Reference Grammar (RRG). My current research interest is the hybridisation of statistical NLP and linguistic NLP to refine the accuracy of the interpretation of meaning to provide a realistic dialogue with deep semantic knowledge. I have presented findings, articles and book chapters on the motivations, design, and evaluation of LING-CSA and challenges of hybridisation. My current research project is motivated by the grand challenges of healthcare, with the pre-screening of dementia via an intervention in the form of CA hybridisation solution with person-centred CA design with submitted application (ongoing review) with UKRI (EPRSC).