Undefined Purpose AI Chatbot -- 2

Despite the initial lack of specifications, I am seeking an adaptable AI professional to create a proficient AI chatbot. The final product should be highly flexible in its applications, able to serve various purposes including customer service, marketing, sales or virtual assisting.

Key functionalities may encompass:
- Answering frequently asked questions
- Providing product recommendations
- Scheduling appointments

Given the diverse range of potential uses, the ideal candidate will have deep expertise in AI and a background in creating chatbots fit for an array of mediums – for example, websites, mobile apps and different messaging platforms. Furthermore, you must be adaptable, able to handle changes in requirements as the project develops.

Flexibility, adaptability, and breadth of knowledge are vital for this project.