Most messages after closing time are the same handful of questions. The chatbot answers those, and passes anything else to your team.
Rules You Write
Match on what the customer said and reply with your own wording, so the answers are yours rather than generic.
Handoff to a Person
When a conversation goes beyond the rules, it is handed to your team with the history intact, so the customer does not repeat themselves.
You Can See What It Did
Automatic replies are recorded in the conversation, so you can read what the bot said and adjust the rules that produced it.