Conversational/customer Support Dataset For Potential Customer Service Chatbot

I’m exploring the possibility of having a basic chatbot for customer service. I need some data for this to train a simple text chatbot.

Are there any datasets available for this? Ideally I’d like each data point to be a textual conversation between a customer and a representative trying to resolve customer’s issues.

The actual topic/domain if conversation can be anything – Pharma, ecommerce, telecom, etc. I’m not restricted to any particular domain.

Let me know if anything like this is publicly available.