seven o'clock
`` Thank you , '' said Susan with a grave , distant smile . `` Got a date for dinner tonight ? '' inquired he ; and , assuming that everything would yield precedence to him , he did not wait for a reply , but went on , `` Tell me your address . I 'll send a cab for you at seven o'clock . '' `` Thank you , '' said Susan , `` but I ca n't go . '' Gideon smiled . `` Oh , do n't be shy .