Required Data Science & Analytics,Data Mining & Management freelancer for NLP Expert job

Looking for NLP expert who can work with me on Topic Modeling in a conversational text between agent and customer.

I want to predict determine if the conversation has multiple topics discussed.

At any point in the conversation, does the customer seem frustrated?
By the end of the conversation, does the customer seem satisfied?
By the end of the conversation, was the problem resolved?

Skills & Expertise Required

Data Science & Analytics Data Mining & Management