Adjust Flask app to use custom conference room.

app.py

from flask import Flask
from twilio import twiml
 
 
app = Flask(__name__)
 
 
# Let's adjust this route to create a custom wait
# experience for our conference call.
@app.route('/conference', methods=['POST'])
def voice():
    response = twiml.Response() 
    with response.dial() as dial:
        # Let's add a waitUrl attribute to this Conference
        # noun and point it to a new endpoint we will
        # create below.
        dial.conference("Today's Headlines", waitUrl="/wait")
    return str(response)


# Here's a new TwiML endpoint we'll create to customize what
# our callers hear when they wait to be connected to conference.
@app.route('/wait', methods=['POST'])
def wait():
    response = twiml.Response()
    response.say("This is totally a custom waiting room experience.")
    return str(response)
 
 
# Add a little boilerplate to run our Flask app.
if __name__ == '__main__':
    port = os.environ.get(5000)
    if port == 5000:
        app.debug = True
    app.run(host='0.0.0.0', port=port)