There is disclosed a method and a system for completing a search query. The method is executable at a server. The method comprises receiving a portion of the search query from an electronic device associated with a user; determining a query-completion suggestion for the received search query portion, the query-completion suggestion based on information searchable within a vertical search domain; determining the most suitable response to the query based on information maintained within the vertical search domain; causing the electronic device to display the user a suggest line, the suggest line including both: (i) the query-completion suggestion and (ii) representation of the most suitable response to the query.