I want to open permission popup for microphone if microphone permission is not granted,

navigator.permissions.query(
        { name: 'microphone' }
    ).then(permissionStatus => {
        
        console.log(permissionStatus.state); // granted, denied, prompt
        if(permissionStatus.state != 'granted')
        {  
          alert('Please allow your microphone');
        }
        else
        {
          this.mic_permission=true;
        }
        let self=this;
        permissionStatus.onchange = function(){
          if(this.state!='granted')
          {
            self.mic_permission=false;
          }
          console.log("Permission changed to " + this.state);
        } 

using this code to check whether microphone permission is granted or not but i want to open popup also so that user can allow the microphone permission