As a user looking for contact information within the Hong Kong government, I want to find the telephone number for the 'Immigration Department' (入境事務處). Please perform a basic search for this department and extract its primary contact number from the search results. If the search fails, state that the search functionality is not working.
Ensure the page is in a stable state on the main search interface. Select '入境事務處' (Immigration Department) from the '決策局 / 部門 / 有關機構' (Bureau / Department / Related Organization) dropdown menu (ID 77). Click the '尋找' (Search) submit button (ID 188). If the search is successful, identify and extract the primary telephone number for the Immigration Department from the results. If the search fails with an error, state that the search functionality is not working.
The agent successfully selects '入境事務處' from the dropdown. The agent attempts to click the '尋找' (Search) button. If the search is successful, the agent states the primary telephone number for the Immigration Department. If the search results in an error (e.g., 'Failed to extract metadata'), the agent explicitly states that the search functionality is not working.