User Authentication in Dailogflow through third party

问题

I have made a chat-bot in android in which i called google dialog-flow api. In google dialog-flow, I am calling an third part api. Now i want to implement user authentication in android app but not from google account. I want to authenticate users from the third party (the one i am connecting it to dialog-flow).

How to authenticate users?. Can i Dynamically Change the username-password in Fulfillment of dialog-flow or is there any API for it?

Note : I don't want to use google account to authenticate users.

Following is the Android code :

final AIConfiguration config = new AIConfiguration("9fweerwewrwr",
         AIConfiguration.SupportedLanguages.English,
         AIConfiguration.RecognitionEngine.System);
         aiService = AIService.getService(this, config);
         aiDataService = new AIDataService(this, config);
         customAIServiceContext = 
         AIServiceContextBuilder.buildFromSessionId(uuid);
         aiRequest = new AIRequest();
         aiService.setListener(this); 

So here I am connecting android app to dialog-flow and from dialog-flow I am putting url, user name and password in fulfillment for third party connection (Where the javascript is used to detect intents and perform function). so in short in fulfillment i am calling an post api. which will send request from dialog-flow to the third party.

Thank you in Advance.

来源：https://stackoverflow.com/questions/58932271/user-authentication-in-dailogflow-through-third-party