Demonstrate recognition in python GUI

hello, i'm using vosk en-us-daanzu model and getting the input from microphone stream using pyaudio like in test_speaker.py every thing is working well but i'm facing problem with continuous input from mic i want to press a button for starting the input from mic and then click another button for ending the input stream ? is that possible ?
i'm working on AI assistant and i want it to work like google assistant when i click a button to start capturing what i want to say
thanks in advance