-In conclusion, I'd like to...
-I'd like to finish by...
-Finally...
-By way of conclusion...
-I hope I have made myself understood
-I hope you have found this useful
-I hope this has given you some idea/clear idea/an outline of...
-Let me end by saying...
-That, then was all I had to say on...
-That concludes our presentation...
-I hope I've managed to give you a clearer picture of...
-If there are any questions, I'd be delighted to...
-Thank you for your attention...
-Let's break for a coffee at this point
-I am afraid that the clock is against us, so we had better stop here
-You have been a very attentive audience---thank you
