Most visitors who leave a website without getting in touch don't leave because they weren't interested. They leave because they had one small question, couldn't find the answer quickly, and didn't feel it was worth a phone call or a form. A question that goes unanswered at 11pm is usually a visitor gone by morning.
A chatbot removes that gap. Visitors get an answer straight away, in their own words and their own language, and asking a quick question in a chat feels far less committing than filling in a form. It also takes the repetitive questions off your plate, so the conversations that reach you are the ones that need a person.
