Do you know use cases where a bot (chat or voice) can be applied to universities? And if so, which channel would you prefer to use?

I'm currently creating plans for building bots for my university. I think, I won't have much difficulties with the development since there is enough work available online.
But I'm having difficulties finding the use-cases for bots at universities. I have read a lot about universities, which are already using bots in their daily routine, but it's still too less. And those who are using, don't tell why they're using a specific channel (messenger, whatsapp, slack, alexa, email, sms ...), but for me this is important to know since I don't want to build one solution for all channels. I emailed all these universities, but they didn't respond yet.

I hope I can find help here:)