Complex dialogs often involve multiple conversation topics.For example, a pizza delivery agent may havefood order,customer information, andconfirmationas distinct topics.Each topic requires multiple conversational turns for an agentto acquire the relevant information from the end-user.

Default start flow

When you create an agent,theDefault Start Flow is created automatically.For a simple agent,you can use this flow as your only flow.For more complex agents,you can add more flows,and the default start flow can be usedas a simple entry point to the conversation.

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• Intent propagation
• Use a simpletrueconditionin aroutethat has a fulfillment response ora transition target to a normal page with entry fulfillment.
• Custom events

Reference start page in API requests

To reference a flow's start page in runtime API requests, useSTART_PAGE as apage ID.

To make design-time changes to a start page through the API, use theget andpatch/update API methods for theFlow type.

Go to the Flow API reference

Create a flow

To create a flow:

Flow data

To access a flow's data:

The following data is associated with flows:

• Pages:The list of pages that make up the flow.
• Routes:All of these routes may be called when thestart pagefor the flow is active.Routes with an intent requirement may be followed when otherpages of the flow are active.For details, seeState handler scopeandFlow-level routes.
• Event handlers:These handlers may be called when the flow is active.For details, seeFlow-level event handlers

For more information about how data is applied at varying levels, see thedata application levels.

Flow settings

The following settings are available for flows:

• Display name:A human-readable name for the flow.
• Description:A description for the flow.
• ML settingsFlow ML settings are also accessed and described inagent ML settings.
• Language auto detectionLanguage auto detection lets you specify which end-user languages Conversational Agents (Dialogflow CX)should automatically recognize and respond in. See thelanguage auto detection documentationfor details.

• Flow lock:A locked flow cannot be edited, including the following changes to its child resources:

  1. Pages cannot becreated, edited, deleted.
  2. Versions cannot becreated, edited, deleted.
  3. Flow-level route groupscannot be created, edited, deleted.
  4. Agent-level route groupsreferenced by a locked flow or any page under a locked flow cannotbe deleted, but they can still be edited.
  Note: This setting cannot be changed if thelock is enabled at the agent level.

• Advanced speech settings:Theseadvanced speech settingscan optionally override the sameagent speech settings.

• Speech adaptation settings:Flow level speech adaptation settings with more detailed instructions inmanual speech adaptation.

• Input parameters:Parameters from the task playbook that are made available to the flow.

• Return parameters:Parameters that the flow returns to a task playbook.

For more information about how data is applied at varying levels, see thedata application levels.

To access flow settings:

Delete a flow

To delete a flow:

Train a flow

To train a flow:

Export a flow

You can export a flow in two ways:

• Data export:This exports your flow as raw data,so it can be imported to any agent.When you export a flow,the resources referenced by the flow (intents, entities, webhooks)are also exported.When following steps below,choose theraw data data format.

• Diagram export (Preview):This exports your flow as a visual diagram.The export format is draw.io XML,so you can import the diagram inLucidchart,diagrams.net,or any other diagram tool that can import the draw.io format.When following steps below,choose theXML data format.

  Note:Diagram export is not available for agents usingCMEK.

You can export a flow with the following options:

• Include referenced flows:Exports the target flow and all levels of referenced flows. Referenced flows include the flows that the target flow is referencing in addition to flows referenced by subsequent referenced flows, with no maximum depth.During import, all of the exported flows will be imported and the transitionsbetween these flows will be preserved.

To export a flow:

Import a flow

When you import a flow from a source agent to a target agent,the global resources referenced by the flow (intents, entities, webhooks)are imported along with the flow-specific data.If the target agent has any global resourceswith the same display names found in the source agent,Conversational Agents (Dialogflow CX) provides a summary of these resources,along with three options to resolve the conflictsfor these resources:

• Replace existing resources:Source agent resources will overwrite target agent resources.
• Import as new resources:Source agent resources will be added with a distinctive suffix in the name.
• Keep original resources:Target agent resources will be unchanged.

To import a flow: