changes to be specific about travel scenarios, setup guidance about goal_categories, fixed a bug about llm selection in tool_activities.py, better comments

tools/goal_registry.py

@@ -98,7 +98,7 @@ goal_pirate_treasure = AgentGoal(
 
 goal_match_train_invoice = AgentGoal(
     id = "goal_match_train_invoice",
-    category_tag="travel",
+    category_tag="travel-trains",
     agent_name="UK Premier League Match Trip Booking",
     agent_friendly_description="Book a trip to a city in the UK around the dates of a premier league match.",
     tools=[
@@ -146,7 +146,7 @@ goal_match_train_invoice = AgentGoal(
 
 goal_event_flight_invoice = AgentGoal(
     id = "goal_event_flight_invoice",
-    category_tag="travel",
+    category_tag="travel-flights",
     agent_name="Australia and New Zealand Event Flight Booking",
     agent_friendly_description="Book a trip to a city in Australia or New Zealand around the dates of events in that city.",    
     tools=[

tools/tool_registry.py

@@ -255,6 +255,7 @@ paycheck_bank_integration_status_check = ToolDefinition(
     ],
 )
 
+# ----- Financial use cases tools -----
 financial_check_account_is_valid = ToolDefinition(
     name="FinCheckAccountIsValid",
     description="Check if an account is valid by email address or account ID. "