$3$ Develop a context diagram and as many nested DFDs as you

consider necessary to represent all the details of the training

logistics system described in the following narrative. If you

discover that the narrative is incomplete, make up reasonable explanations to complete the story. Supply these extra

explanations along with the diagrams.

Training, Inc., conducts training seminars in major

U$.$S$.$ cities. For each seminar, the Logistics department

must make arrangements for the meeting facilities, the

training consultant$$s travel, and the shipment of any

seminar materials. For each scheduled seminar, the

Bookings department notifies the logistics coordinator of the type of seminar, the dates and city location,

and the name of the consultant who will conduct the

training. To arrange for meeting facilities, the logistics

coordinator gathers information on possible meeting

sites in the scheduled city. The meeting site location

decision is made based on date availability, cost, type

of meeting space available, and convenience of the

location. Once the site decision is made, the coordinator speaks with the sales manager of the meeting facility to reserve the meeting room$($s$),$ plan the seating

arrangement$($s$),$ and reserve any necessary audiovisual

equipment. The coordinator estimates the number

and size of meeting rooms, the type of seating arrangements, and the audiovisual equipment needed for each

seminar from the information kept in a logistics database on each type of seminar offered and the number

of anticipated registrants for a particular booking. After

negotiations are conducted by the logistics coordinator

and the sales manager of the meeting facility, the sales

manager creates a contract agreement specifying the

negotiated arrangements and sends two copies of it to

the logistics coordinator. The coordinator reviews the

agreement and approves it if no changes are needed.

One copy of the agreement is filed and the other copy

is sent back to the sales manager. If changes are needed,

the agreement copies are changed and returned to the

sales manager for approval. This approval process continues until both parties have approved the agreement.

The coordinator must also contact the training consultant to make travel arrangements. First, the coordinator

reviews the consultant$$s travel information in the logistics database and researches flight schedules. Then

the consultant is contacted to discuss possible travel

arrangements; subsequently, the coordinator books a

flight for the consultant with a travel agency. Once the

consultant$$s travel arrangements have been completed,

a written confirmation and itinerary are sent to the consultant. Two weeks before the date of the seminar, the

coordinator determines what, if any, seminar materials

$($e$.$g$.,$ transparencies, training guides, pamphlets, etc.$)$

need to be sent to the meeting facility. Each type of

seminar has a specific set of materials assigned to it$.$ For

some materials, the coordinator must know how many

participants have registered for the seminar in order to

determine how many to send. A request for materials is

sent to the Materials$-$Handling department, where the

materials are gathered, boxed, and sent to the meeting address listed on the request. Once the requested

materials have been shipped, a notification is sent to

the logistics coordinator