When someone tweets #UberReddingRequest then a notification is sent to your phones IFTTT app.
If
New tweet from search
This Trigger fires every time a new tweet matches your search query. Limited to 30 tweets per check, and protected tweets will not be returned.
Then
Send a notification from the IFTTT app
This action will send a notification to your devices from the IFTTT app.
Explore more great ways to automate Notifications and Twitter