Hello , Jack here .   Hello , Jack . It ’ s Mary . What are you doing in your office ?   I ’ m working . I often work late on Thursday . I ’ m busy this week .   Would you like to come and have dinner with us on Friday ?   Tomorrow ? No , I am afraid I won ’ t be able to . I ’ m going on business to Birmingham .   What about Saturday ?   Sorry , I never go out on Saturday evening . I always watch football on Saturday evening .   Will you come round next Tuesday ?   Next Tuesday ? Just a moment . It will be the twenty-first of May ? Oh , dear . Hum , I promised my aunt I ’ ll be at her birthday party .   What do you say next Wednesday then ? 