I'm assuming you are referring to Act 3, scene 1, when Titania's four named fairies - Peaseblossom, Mote, Cobweb, and Mustardseed - come in with Titania and Bottom, whose head has been turned into that of a donkey.  Titania is in love with Bottom and has bid her fairies do anything Bottom asks of them.  So he is conversing with this quartet of fairies, asking them to fetch him a variety of things, rub his ears, etc.

Check the link below for more information, and give the play a more careful re-read to find answers to questions like this.  Good luck!