# Pull Request Template
## Description
Please include a summary of the change and issue(s) fixed. Also, mention
relevant motivation, context, and any dependencies that this change
requires.
- Add language_code setting to Dialogflow integration configuration
- Support 'auto' mode to detect language from contact's
additional_attributes
- Fallback to 'en-US' when no language is configured or detected
- Include comprehensive language options (22 languages)
- Add tests for language code configuration scenarios
Fixes#3071
## Type of change
Please delete options that are not relevant.
- [ ] Bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality not to work as expected)
- [ ] This change requires a documentation update
## How Has This Been Tested?
Please describe the tests that you ran to verify your changes. Provide
instructions so we can reproduce. Please also list any relevant details
for your test configuration.
<img width="815" height="506" alt="Screenshot 2026-01-10 220410"
src="https://github.com/user-attachments/assets/26d2619c-ed42-4c9a-a41d-9fb07ef91a30"
/>
## Checklist:
- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [ ] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules
---------
Co-authored-by: Sojan Jose <sojan@pepalo.com>
## Summary
- support region option when configuring Dialogflow integration
- connect to region endpoint when set
- use session identification based on the region
Fixes: https://github.com/chatwoot/chatwoot/issues/4129
