Do you have a web-application?
Do you use your own/third party app for Assisting your customers over chat?
If answer to both previous questions is YES or you are considering to add such a feature. Then:
Phrases being used by these products:
It is super easy to get started - Tawk.to
Chat in minutes. Copy. Paste. Chat. - Olark
They make it sound so easy and also something which a product should be least bothered about.
Keep your customers closer.
Zulip : Powerful open source group chat
Slack + More
GitHub Repo: https://github.com/baali/chat-with-us