Why would the following synthetic route shown below be unsuccessful? 
Definitions:
Telephone Numbers
Sequences of digits assigned for communication on telephony devices, enabling connection to a specific line.
Patient Cancellations
Refers to the instances when patients inform healthcare providers they cannot attend scheduled appointments.
Letter
A written, typed, or printed communication, especially one sent in an envelope by mail or messenger.
Schedule Another Patient
The process of arranging for another patient to have an appointment or consultation in a medical setting.
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