Tag one chance cab operators

I'm not sure what you mean by "tag one chance cab operators". Are you looking for a list of taxi companies or operators that offer one-time or occasional rides? If so, here are a few examples:

1. Uber - a popular ride-hailing service that connects passengers with drivers for one-time rides.
2. Lyft - another popular ride-hailing service that offers one-time rides.
3. Via - a ride-hailing service that offers affordable, one-time rides in select cities.
4. Juno - a ride-hailing service that offers one-time rides and focuses on providing a more personalized experience.
5. Curb - a ride-hailing service that connects passengers with taxi drivers for one-time rides.

Please note that this is not an exhaustive list, and there may be other taxi companies or operators that offer one-time rides in your area.