Customer support bot with specialized workflow agents

Inspired by langchain's customer support bot example, this streamlit app demonstrates a minimum customer support bot with specialized workflow agents using Langchain's Langgraph and Langchain libraries.

Workflow agents

• Primary agent: This agent is responsible for greeting the user and delegating the user to the appropriate specialized agent based on the user's query.
• Specialized agents: These agents are responsible for handling specific types of queries. In this example, we have two specialized agents:
  • Flight booking agent: This agent is responsible for handling flight booking queries.
  • Excursion booking agent: This agent is responsible for handling excursion booking queries.

How to run the app

1. Clone the repository:

   git clone

2. Install the required libraries:

   pip install -r requirements.txt

3. Add OpenAI API key and Langchain API key to the .env file:

   LANGCHAIN_API_KEY=<your_langchain_api_key>
   OPENAI_API_KEY=<your_openai_api_key>
   LANGCHAIN_TRACING_V2=true
   LANGCHAIN_PROJECT=customer-support-bot

4. Run the app:

   streamlit run main.py

5. Open the URL displayed in the terminal in your browser.

How to use the app

1. Enter your query in the text box.

• Example queries:
  • Hi there, what time is my flight?.
  • Am i allowed to update my flight to something sooner? I want to leave later today..
  • Update my flight to sometime next week then.
  • The next available option is great.
  • what about lodging and transportation?.
  • Yeah i think i'd like an affordable hotel for my week-long stay (7 days). And I'll want to rent a car..
  • OK could you place a reservation for your recommended hotel? It sounds nice..
  • yes go ahead and book anything that's moderate expense and has availability..
  • Now for a car, what are my options?.
  • Awesome let's just get the cheapest option. Go ahead and book for 7 days.
  • Cool so now what recommendations do you have on excursions?.
  • Are they available while I'm there?.
  • interesting - i like the museums, what options are there? .
  • OK great pick one and book it for my second day there..

Agent flow