A computing system can manage a network-based service for a given region. The system receives a transport request from a user device of a requesting user, the transport request including a pickup location and a specified vehicle type. Based on the specified vehicle type, the system makes a determination to fulfill the transport request by performing a first set of operations in accordance with a multi-invitation mode as opposed to a second set of operations in accordance with a single-invitation mode. The multi-invitation mode includes transmitting an invitation to service the transport request multiple provider devices of candidate transport providers, and selecting a transport provider from the candidates to service the transport request for the requesting user.