Task
📝 **Task:** Build a phone book using a dictionary.
📋 **Steps:**
1. Create the dict `contacts = {"Anna": "050-111-22-33"}`
2. Add a new contact: `contacts["Boris"] = "067-444-55-66"`
3. Print Boris's number via `print(contacts["Boris"])`
💡 **Similar example (prices):**
```python
prices = {"apple": 25}
prices["bread"] = 18
print(prices["bread"]) # 18
```
⚠️ **Hint:** access a value with square brackets and the key: `contacts["Anna"]`.
🎯 **Expected output:** `067-444-55-66`