AI Multi-Platform Assistant Development

I'm seeking a skilled developer to create an AI agent that will streamline my communication and task management across multiple platforms. The AI will need to handle:

WhatsApp, Email, and Social Media
On WhatsApp:
- Customer service & support
- Appointment setting
- Sales support

Via Email:
- Customer service & support
- Manage appointment reminders
- Nurturing and follow-ups

The ideal candidate should have experience in AI development, familiarity with APIs of the mentioned platforms, and a strong understanding of customer service automation. Skills in natural language processing and machine learning would be a plus. Please include relevant experience in your bids.