Uber says it is working with the Boston Police Department after one of the company's rideshare drivers allegedly dragged a woman with a vehicle in South Boston.Boston police said they responded to the incident, which happened in the area of 930 East 4th St. just before 3 a.m. Sunday.Officers were met by a woman at the scene who told them that she had left her phone in an Uber earlier in the night and had arranged for the driver, a man, to deliver it to her at the East 4th Street location.The woman then told police that the driver demanded a cash payment for delivering the phone, but she did not have any cash on her. A verbal argument ensued, and when the woman reached inside the vehicle to retrieve her phone, the driver put the vehicle in gear and accelerated toward P Street as she was still holding onto the vehicle.Ed Booth, a rideshare driver who works for Lyft, was picking up passengers in the area where the incident occurred and captured it on camera."They were talking in the window for a couple of seconds and then, all of a sudden, you saw the car take off with her still hanging in the window," Booth said.The video Booth shared with sister station WCVB showed the woman eventually fall to the ground while the vehicle continued to move down East 4th Street.In addition, the video shows a man who was with the woman chase the vehicle down. The driver eventually got out of his vehicle and Booth said more verbal arguing took place outside of his camera's view."Being a little nervous about what this guy was going to do, I locked the doors so that I was safe and my passengers were safe," Booth said.Boston police said that the Uber driver did stop his vehicle about half of a city block away and that the woman was able to retrieve her phone, which had a cracked front screen."What's been described is unacceptable and in clear violation of our community guidelines," reads a statement from an Uber spokesperson. "We have been in touch with both the rider and driver and will take appropriate action."Booth said he stopped to check on the woman after the Uber driver had left the scene."She was just sitting on the ground with her head down and her hands over her head, and I think dazed and confused about what just happened," Booth said.According to police, the woman complained of pain to her right cheek and officers observed minor swelling to the area. Police said the woman refused treatment from Boston Emergency Medical Services.No charges have been filed at this time in connection with the incident.According to Uber, riders are charged a $15 fee if a driver retrieves a lost item on their behalf. However, no cash should be exchanged for those transactions.