Activity Report Creation

Prepare a comprehensive activity report detailing the completed tasks, ongoing projects, and upcoming plans within a specific timeframe. Ensure to summarize key achievements, challenges faced, and any actionable items for the next period. 

Include sections for:  
- **Overview**: A brief summary of the reporting period.  
- **Completed Tasks**: List of tasks accomplished, including timelines and responsible personnel.  
- **Ongoing Projects**: Update on current projects, including status, key milestones, and any roadblocks.  
- **Upcoming Plans**: Outline plans for the next reporting period, specifying objectives and expected outcomes.  
- **Challenges and Solutions**: Discuss any challenges encountered and the strategies implemented to overcome them.  
- **Action Items**: Clearly list next steps and assignments for team members.  

Be sure to use clear headings and bullet points for readability.