Scheduling software for elderly care patients and the peddler that will peddle them around in a custom elderly care three wheel bicycle

We need a scheduling program that will allow elderly riders and elderly caregivers the ability to post requests for peddlers on specific dates and times. The postings will be made from a computer web based app or from a smart phone app. The riders or elderly caregivers will post available dates and times for elderly care patients desiring a ride on an elderly care bicycle or a peddler can post his/her available times to peddle. These posting would then be sent electronically to all peddlers associated with the specific elderly care facility via an email notice and/or message sent to a smart phone app. A peddler then can either accept the request or suggest a different day and time or ignore the request. Once the peddler and rider agree on a day and time for the ride they will both be sent reminders at xx intervals and also have the ability to cancel or move the scheduled ride to a different day and time if necessary. The riders volunteer their time thus no money is exchanged via this software. It is simply a scheduling software that links the rider, care givers and peddlers together.