Welcome to the answer_chat_dialogflow_agent readme!
Please replace your project details found in the JSON file key you downloaded from GCP Service Account.
You will find the info to replace the lines: Line 6 Line 10 Line 11 Line 51 Line 52
You can change the agent language in Line 24 check the Languages available here -> https://voximplant.com/docs/references/voxengine/voicelist/google