Stateful Conversational Agent Class | Dataford Interview Questions

Implement a class that represents a stateful conversational agent, demonstrating proper encapsulation and error handling. The agent must maintain a current user and conversation history while exposing behavior through public methods rather than direct state access. Implement run_conversation(commands) to execute command dictionaries and return one result per command. Supported commands are set_user, send, and reset; invalid commands, missing users, and empty messages must return structured errors instead of raising exceptions. For example, setting user Ada followed by sending hello returns a successful greeting.

Constraints

1 <= len(commands) <= 10^4
Each command is a dictionary or another JSON-like object
Supported actions are set_user, send, and reset
User names and messages contain at most 10^3 characters
Expected input errors must be returned as dictionaries, not raised

Function Signature

def run_conversation(commands):

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Problem

Constraints

1 <= len(commands) <= 10^4
Each command is a dictionary or another JSON-like object
Supported actions are set_user, send, and reset
User names and messages contain at most 10^3 characters
Expected input errors must be returned as dictionaries, not raised

Function Signature

def run_conversation(commands):

Your question is Stateful Conversational Agent Class. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.