Cab booking public process - Collaboration BPMN 2.0 diagram

The Collaborative business process diagram depicts interactions between customer, travel agent and cab driver, which are defined as a sequence of activities, and represent the message exchange during a cab booking process.
"Business process modeling is used to communicate a wide variety of information to a wide variety of audiences. BPMN is designed to cover this wide range of usage and allows modeling of end-to-end business processes to allow the viewer of the Diagram to be able to easily differentiate between sections of a BPMN Diagram. There are three basic types of sub-models within an end-to-end BPMN model: Private (internal) business processes, Abstract (public) processes, and Collaboration (global) processes...
Collaboration (global) processes.
A collaboration process depicts the interactions between two or more business entities. These interactions are defined as a sequence of activities that represent the message exchange patterns between the entities involved. Collaboration processes may be contained within a Pool and the different participant business interactions are shown as Lanes within the Pool. In this situation, each Lane would represent two participants and a direction of travel between them. They may also be shown as two or more Abstract Processes interacting through Message Flow. These processes can be modeled separately or within a larger BPMN Diagram to show the Associations between the collaboration process activities and other entities. If the collaboration process is in the same Diagram as one of its corresponding private business process, then the activities that are common to both processes can be associated." [Business Process Model and Notation. Wikipedia]
The BPMN 2.0 (Business Process Model and Notation) collaboration diagram example "Cab booking public process" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Business Process Diagram solution from the Business Processes area of ConceptDraw Solution Park.

The vector stencils library "Gateways" contains 8 symbols of exclusive, event-based, parallel, inclusive and complex gateways.
Use these shapes for creating the business process diagrams using the ConceptDraw PRO diagramming and vector drawing software.
"Gateway.
A gateway is represented with a diamond shape and determines forking and merging of paths, depending on the conditions expressed.
Exclusive.
Used to create alternative flows in a process because only one of the paths can be taken, it is called exclusive.
Event Based.
The condition determining the path of a process is based on an evaluated event.
Parallel.
Used to create parallel paths without evaluating any conditions.
Inclusive.
Used to create alternative flows where all paths are evaluated.
Exclusive Event Based.
An event is being evaluated to determine which of mutually exclusive paths will be taken.
Complex.
Used to model complex synchronization behavior.
Parallel Event Based.
Two parallel process are started based on an event but there is no evaluation of the event." [Business Process Model and Notation. Wikipedia]
The example "Design elements - Gateways BPMN 2.0" is included in the Business Process Diagram solution from the Business Processes area of ConceptDraw Solution Park.