Need a speech recognition with Asterisk

This project is a first prototype. If we success, we go to big project. The prototype is to have the recognition text from 2 users. We use google speech api We use this Perl program as AGI script to call google speech api (This program work correctly) when a user call the Asterisk extension. But don't work when Dial an external Sip account. For best understand : see the [login to view URL] So the job is to write a dialplan wich do this : 1 - user 1 call a number hosted on provider 2 - Asterisk is connected to this provider and receive the call wich is sent to extension (did) 1111 3 - user2 is connected on siphone to account 1111 4 - when user 1 and user 2 are connected : the program Agi recognition must be called and get text conversation Remark : - we provide a host for dev test. We provide account sip for test. - Asterisk 13 is already installed - [login to view URL] is also installed and from [login to view URL] , this programm work correctly when user 1 call asterisk and asterisk repond directly Before to reponse : be sure that : - you understand my little need (for now) and ask me question - you must be expert in dialplan/extension Asterisk - you must well know perl script (if need to update [login to view URL])