Koishi is trading:
ABSOL - LEVEL 39 - F - IMPISH NATURE MOVES: PSYCHO CUT, DETECT, NIGHT SLASH, SWORDS DANCE
SPIRITOMB - Level 99 - F - Calm Nature Moves: Sucker Punch, Nasty Plot, Memento, Dark Pulse

For Satori's:
SNORLAX - Level 31 - M - Careful Nature Moves: Yawn, Body Slam, Rest, Snore
CHANSEY - Level 20 - F - Serious Nature Moves: Refresh, Double Slap, Soft-Boiled, Bestow

Additionally, Koishi is giving Satori this pokemon on the 30th:
PURRLOIN - LEVEL 2 - F - Bashful Nature Moves: Scratch

She is also giving Satori this pokemon at the END of the 31st:
MUSHARNA - LEVEL 43 - F - Bold Nature Moves: Dream Eater, Psychic, Nightmare, Hypnosis