Ответ:

1. Mr Foster said that he had bought tickets for the football match next Sunday.

2. His son told him that he really wanted to watch this match.

3. Mr Foster said he also had one extra ticket because his friend, Ross, wouldn't join them.

4. His son told him not to worry and that he could ask his bff to join them.

5. Mr Foster said that they could give him a lift to the stadium.

6. His son answered that  it was perfect and that he would call him and tell him then.

Объяснение: reported speech.