def subject_list_to_message(subject_list):
    """
    Converts the list of subjects into a string to send the user.
    """
    message_text = ""
    srno = 0
    for subject in subject_list:
        message_text += "/{srno}. {subject}\n".format(srno = srno, subject = subject)
        srno += 1
    return message_text