Garima,
If you are willing to develop some code, you could conceivably use our Bot Connector (https://developer.genesys.cloud/commdigital/textbots/botconnector-customer-api-spec) to bridge from an inbound messaging flow to a 3rd party chat system like MS Teams or Zoom. The Bot Connector has some rules in place about how long the Bot/Human can take to respond, but you might be able to work around those limitations. The Bot Connector is designed to integrate to an AI system, but the AI could be a living, breathing human.
You might also be able to use a Bot Flow (or even the inbound message flow itself) with Data Actions to build a bridge to those systems as well. You would just have to loop in the flow calling the Data Action so send any messages to the 3rd party system and to pickup any replies that they have replied with.
Good luck,
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Jim Crespino
Senior Director, Developer Evangelism
Genesys
https://developer.genesys.com------------------------------