community[patch]: Improve amadeus tool and doc (#18509)

Description:

This pull request addresses two key improvements to the langchain
repository:

**Fix for Crash in Flight Search Interface**:

Previously, the code would crash when encountering a failure scenario in
the flight ticket search interface. This PR resolves this issue by
implementing a fix to handle such scenarios gracefully. Now, the code
handles failures in the flight search interface without crashing,
ensuring smoother operation.

**Documentation Update for Amadeus Toolkit**:

Prior to this update, examples provided in the documentation for the
Amadeus Toolkit were unable to run correctly due to outdated
information. This PR includes an update to the documentation, ensuring
that all examples can now be executed successfully. With this update,
users can effectively utilize the Amadeus Toolkit with accurate and
functioning examples.
These changes aim to enhance the reliability and usability of the
langchain repository by addressing issues related to error handling and
ensuring that documentation remains up-to-date and actionable.

Issue: https://github.com/langchain-ai/langchain/issues/17375

Twitter Handle: SingletonYxx

libs/community/langchain_community/tools/amadeus/flight_search.py

@@ -31,7 +31,7 @@ class FlightSearchSchema(BaseModel):
         description=(
             " The earliest departure datetime from the origin airport "
             " for the flight search in the following format: "
-            ' "YYYY-MM-DDTHH:MM", where "T" separates the date and time '
+            ' "YYYY-MM-DDTHH:MM:SS", where "T" separates the date and time '
             ' components. For example: "2023-06-09T10:30:00" represents '
             " June 9th, 2023, at 10:30 AM. "
         )
@@ -40,7 +40,7 @@ class FlightSearchSchema(BaseModel):
         description=(
             " The latest departure datetime from the origin airport "
             " for the flight search in the following format: "
-            ' "YYYY-MM-DDTHH:MM", where "T" separates the date and time '
+            ' "YYYY-MM-DDTHH:MM:SS", where "T" separates the date and time '
             ' components. For example: "2023-06-09T10:30:00" represents '
             " June 9th, 2023, at 10:30 AM. "
         )
@@ -97,6 +97,7 @@ class AmadeusFlightSearch(AmadeusBaseTool):
             return [None]
 
         # Collect all results from the Amadeus Flight Offers Search API
+        response = None
         try:
             response = client.shopping.flight_offers_search.get(
                 originLocationCode=originLocationCode,
@@ -109,32 +110,32 @@ class AmadeusFlightSearch(AmadeusBaseTool):
 
         # Generate output dictionary
         output = []
-
-        for offer in response.data:
-            itinerary: Dict = {}
-            itinerary["price"] = {}
-            itinerary["price"]["total"] = offer["price"]["total"]
-            currency = offer["price"]["currency"]
-            currency = response.result["dictionaries"]["currencies"][currency]
-            itinerary["price"]["currency"] = {}
-            itinerary["price"]["currency"] = currency
-
-            segments = []
-            for segment in offer["itineraries"][0]["segments"]:
-                flight = {}
-                flight["departure"] = segment["departure"]
-                flight["arrival"] = segment["arrival"]
-                flight["flightNumber"] = segment["number"]
-                carrier = segment["carrierCode"]
-                carrier = response.result["dictionaries"]["carriers"][carrier]
-                flight["carrier"] = carrier
-
-                segments.append(flight)
-
-            itinerary["segments"] = []
-            itinerary["segments"] = segments
-
-            output.append(itinerary)
+        if response is not None:
+            for offer in response.data:
+                itinerary: Dict = {}
+                itinerary["price"] = {}
+                itinerary["price"]["total"] = offer["price"]["total"]
+                currency = offer["price"]["currency"]
+                currency = response.result["dictionaries"]["currencies"][currency]
+                itinerary["price"]["currency"] = {}
+                itinerary["price"]["currency"] = currency
+
+                segments = []
+                for segment in offer["itineraries"][0]["segments"]:
+                    flight = {}
+                    flight["departure"] = segment["departure"]
+                    flight["arrival"] = segment["arrival"]
+                    flight["flightNumber"] = segment["number"]
+                    carrier = segment["carrierCode"]
+                    carrier = response.result["dictionaries"]["carriers"][carrier]
+                    flight["carrier"] = carrier
+
+                    segments.append(flight)
+
+                itinerary["segments"] = []
+                itinerary["segments"] = segments
+
+                output.append(itinerary)
 
         # Filter out flights after latest departure time
         for index, offer in enumerate(output):