Realtime: add handoff prompt prefix

examples/realtime/app/agent.py

@@ -1,36 +1,93 @@
 from agents import function_tool
-from agents.realtime import RealtimeAgent
+from agents.extensions.handoff_prompt import RECOMMENDED_PROMPT_PREFIX
+from agents.realtime import RealtimeAgent, realtime_handoff
 
 """
 When running the UI example locally, you can edit this file to change the setup. THe server
 will use the agent returned from get_starting_agent() as the starting agent."""
 
+### TOOLS
+
+
+@function_tool(
+    name_override="faq_lookup_tool", description_override="Lookup frequently asked questions."
+)
+async def faq_lookup_tool(question: str) -> str:
+    if "bag" in question or "baggage" in question:
+        return (
+            "You are allowed to bring one bag on the plane. "
+            "It must be under 50 pounds and 22 inches x 14 inches x 9 inches."
+        )
+    elif "seats" in question or "plane" in question:
+        return (
+            "There are 120 seats on the plane. "
+            "There are 22 business class seats and 98 economy seats. "
+            "Exit rows are rows 4 and 16. "
+            "Rows 5-8 are Economy Plus, with extra legroom. "
+        )
+    elif "wifi" in question:
+        return "We have free wifi on the plane, join Airline-Wifi"
+    return "I'm sorry, I don't know the answer to that question."
+
+
+@function_tool
+async def update_seat(confirmation_number: str, new_seat: str) -> str:
+    """
+    Update the seat for a given confirmation number.
+
+    Args:
+        confirmation_number: The confirmation number for the flight.
+        new_seat: The new seat to update to.
+    """
+    return f"Updated seat to {new_seat} for confirmation number {confirmation_number}"
+
 
 @function_tool
 def get_weather(city: str) -> str:
     """Get the weather in a city."""
     return f"The weather in {city} is sunny."
 
 
-@function_tool
-def get_secret_number() -> int:
-    """Returns the secret number, if the user asks for it."""
-    return 71
-
+faq_agent = RealtimeAgent(
+    name="FAQ Agent",
+    handoff_description="A helpful agent that can answer questions about the airline.",
+    instructions=f"""{RECOMMENDED_PROMPT_PREFIX}
+    You are an FAQ agent. If you are speaking to a customer, you probably were transferred to from the triage agent.
+    Use the following routine to support the customer.
+    # Routine
+    1. Identify the last question asked by the customer.
+    2. Use the faq lookup tool to answer the question. Do not rely on your own knowledge.
+    3. If you cannot answer the question, transfer back to the triage agent.""",
+    tools=[faq_lookup_tool],
+)
 
-haiku_agent = RealtimeAgent(
-    name="Haiku Agent",
-    instructions="You are a haiku poet. You must respond ONLY in traditional haiku format (5-7-5 syllables). Every response should be a proper haiku about the topic. Do not break character.",
-    tools=[],
+seat_booking_agent = RealtimeAgent(
+    name="Seat Booking Agent",
+    handoff_description="A helpful agent that can update a seat on a flight.",
+    instructions=f"""{RECOMMENDED_PROMPT_PREFIX}
+    You are a seat booking agent. If you are speaking to a customer, you probably were transferred to from the triage agent.
+    Use the following routine to support the customer.
+    # Routine
+    1. Ask for their confirmation number.
+    2. Ask the customer what their desired seat number is.
+    3. Use the update seat tool to update the seat on the flight.
+    If the customer asks a question that is not related to the routine, transfer back to the triage agent. """,
+    tools=[update_seat],
 )
 
-assistant_agent = RealtimeAgent(
-    name="Assistant",
-    instructions="If the user wants poetry or haikus, you can hand them off to the haiku agent via the transfer_to_haiku_agent tool.",
-    tools=[get_weather, get_secret_number],
-    handoffs=[haiku_agent],
+triage_agent = RealtimeAgent(
+    name="Triage Agent",
+    handoff_description="A triage agent that can delegate a customer's request to the appropriate agent.",
+    instructions=(
+        f"{RECOMMENDED_PROMPT_PREFIX} "
+        "You are a helpful triaging agent. You can use your tools to delegate questions to other appropriate agents."
+    ),
+    handoffs=[faq_agent, realtime_handoff(seat_booking_agent)],
 )
 
+faq_agent.handoffs.append(triage_agent)
+seat_booking_agent.handoffs.append(triage_agent)
+
 
 def get_starting_agent() -> RealtimeAgent:
-    return assistant_agent
+    return triage_agent