Could I speak to Mary , please ?   This is Mary speaking . Who is that ?   This is Bob . Where have you been , Mary ? I have been trying to get on to you for the last half hour . Don ’ t you leave your home at 7   Yes , I do , but today I went shopping and have only just come back . It is very nice to hear your voice , Bob . I didn ’ t know you were in New York .   I arrived this morning . I would have rung you before but I have been terribly busy all day attending a conference . It has only just ended . Are you doing anything tonight , Mary ?   Yes , I am going to meet a client .   But that is terrible ! I am only here for one night !   I am sorry , Bob . If you had told me you were coming up , I would have kept tonight free . But you didn ’ t tell me .   I didn ’ t know myself till this morning when my boss suddenly dashed into the office and told me to rush up here to attend the conference .   I thought Henry usually did the conferences .   Yes , he does but when he was driving up here last night he had an accident and was taken to hospital . So I am doing it instead . Mary , Must you go out tonight ? Couldn ’ t you get out of it ?   I ’ m free tomorrow but I suppose that will be too late .   No , I will stay another day.my boss will get over it . Would you like to meet me for lunch tomorrow ?   I ’ d like to . But Bob , are you sure it will be all right ? I would hate you to make your boss angry or even lose your job .   It is all right . I will call the boss and tell him I am staying another day . I stayed an extra night in Boston last month and he didn ’ t seem to put about it .   Why did you stay an extra night in Boston ? What happened ? 