Milo Chatbot User Guide

Introduction

Milo is a personal task management chatbot that helps you organize your tasks efficiently. It runs in the console and stores your tasks locally in a file. Milo supports adding, deleting, marking tasks as done, searching tasks, and listing all tasks in a user-friendly interface.

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Features

• Add Tasks
  • ToDo: simple task without a date.
  • Deadline: task with a due date.
  • Event: task with start and end dates.
• Delete Tasks
• Mark / Unmark Tasks
• List Tasks
• Search Tasks
• Exit Application

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Getting Started

Running Milo

Run the program from the command line:

java Milo

Milo will display a welcome message and prompt you for commands.

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Task Commands

1. Adding Tasks

ToDo

todo <description>

Example:

todo Buy groceries

Deadline

deadline <description> /by <yyyy-MM-dd>

Example:

deadline Submit report /by 2025-10-10

Event

event <description> /from <yyyy-MM-dd> /to <yyyy-MM-dd>

Example:

event Project meeting /from 2025-10-05 /to 2025-10-06

Milo confirms the task has been added and shows the total number of tasks.

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2. Deleting a Task

delete <task number>

Example:

delete 2

Milo removes the task and displays the updated task count.

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3. Marking / Unmarking Tasks

Mark as done

mark <task number>

Example:

mark 1

Unmark (mark as not done)

unmark <task number>

Example:

unmark 1

Milo displays a confirmation message after the operation.

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4. Listing All Tasks

list

Milo displays all tasks with their type, status, and relevant dates:

• [T] ToDo
• [D] Deadline
• [E] Event
• [X] done / [ ] not done

Example Task List Display:

1.[T][ ] Buy groceries
2.[D][X] Submit report (by: Oct 10 2025)
3.[E][ ] Project meeting (from: Oct 5 2025 to: Oct 6 2025)

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5. Searching Tasks

find <keyword>

Example:

find report

Milo displays all tasks containing the keyword.

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6. Exiting Milo

bye

Milo displays a goodbye message and exits.

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Input Guidelines

• Dates must be in the format yyyy-MM-dd.
• Task numbers must be valid (within the current list range).
• Commands must follow the exact formats shown above.

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Error Handling

Milo provides user-friendly error messages for invalid inputs:

• UnknownTaskException: Command not recognized.
• TodoException: ToDo command missing description.
• ByException: Deadline command missing or invalid date.
• EventException: Event command missing description, start date, or end date.
• IndexIllegalException: Task number is out of range.

Example error message:

Sorry! I can not find the things to do!!!

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Data Persistence

• Tasks are stored in data/tasks.txt.
• Milo loads existing tasks on startup.
• Changes are saved automatically when tasks are added, deleted, or updated.

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Quick Reference Table

Command	Format	Example
Add ToDo	todo <description>	todo Buy groceries
Add Deadline	deadline <description> /by <date>	deadline Submit report /by 2025-10-10
Add Event	event <desc> /from <start> /to <end>	event Meeting /from 2025-10-05 /to 2025-10-06
Delete	delete <task number>	delete 2
Mark Done	mark <task number>	mark 1
Unmark	unmark <task number>	unmark 1
List	list	list
Find	find <keyword>	find report
Exit	bye	bye

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Tips

• Keep descriptions concise for easier readability.
• Always check task numbers before marking or deleting.
• Milo automatically saves your work—no need to manually save.

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Enjoy managing your tasks efficiently with Milo!