Rasa SDK handle multiple requests

Hi all, I wonder how I can handle multiple request at the same time on the default rasa action server. What I encounter is that, I run an Action form, where inside the submit, i query and API. And withing the API server, I try send a notification to the user using the /trigger_intent endpoint.

What i tried: Coroutines by making 'submit’ function async, but didn"t work. Is someone know how I can handle this ?

Thanks!