Pass data to start of session (IVR) - dialogflow-cx

Question

Looking into starting a project using DialogFlow CX. Seems rather promising but have one issue I cannot seem to find an answer for. The agent will be connected to via IVR (from Flex/Callcenter). I need to gather some information on start so that I can identify the hotel/property that will be referenced in the conversation. I found session parameters but those are isolated to the session from start to finish but not passed to the start of a session. We are starting with about 60 properties and when the agent starts, it needs to "know" what property it is dealing with.
Another quick question - will I need a separate telephony integration number to run multiple concurrent instances?
I am really new to all this so my language may be off. Thanks in advance!!
Robert

Answer 1

Passing parameters to dialogflow Cx depends on your integration, but a general way to do this would be to call a webhook at the Welcome node with parameters set to null that you want to return with updated values from backend:
Return Response in the following manner and it will work via a webhook:
Link to Google Cloud Functions Webhook Example
{
"fulfillment_response":
{
"messages": [
{
"text": {
"text": [
"Test Response"
]
}
}
]
},
"session_info": {
"session": projects/project-name/locations/your-agent-location/agents/a6ed61ef-008b-49bb-8526-d8e68982d2b4/sessions/d3bd9c-9d9-8c8-4a8-f623bdb25,
"parameters": {
"property1": 746932,
"property2":34123
}
}
}
Python Flask Solution:
import os
from flask import Flask, request, redirect
app =Flask(__name__)
#app.route('/test', methods=['POST'])
def test():
req = request.get_json()
session_name=req['sessionInfo']['session']
print(req)
res = {
"fulfillment_response":
{
"messages": [
{
"text": {
"text": [
"Test Response"
]
}
}
]
},
"session_info": {
"session": session_name,
"parameters": {
"property1": 746932,
"property2":34123
}
}
}
return res
if __name__ == "__main__":
app.run(port=5000,debug=True)