Stage Secretary Dialogues needed

Hi friends i have to host my college get to gather function this week.My English vocabulary is quiet poor.I need a few dialogues how to invite performers (singers, drama act, speech, poetry etc) on stage. Please suggest me any particular web which cud assist me making script or write a few statements here. I shall be v grateful to u all.

youtube...

you can find all sorts of performances, dialogues and how to deliver with correct pronunciations and delivery of dialogues..