Puzzlaria explores space ...

Puzzlarian scientists Cam and Chris have finally realized their dream of a manned space mission. To make the best use of available quarters on the spacecraft, beds are arranged in bunk-bed fashion:

bottom bunk - A
second bunk - B
third bunk --- C
fourth bunk -- D

Crew member names:
Knightmare Carter
Karl Dare
Ross Flandry
Boris Kinnison

Crew expertise:
tiddlywink expert
crossword expert
sudoku expert
kenken puzzle expert

Although the craft is automatic and requires little invovlement by the crew, each has assigned roles:
photographer
diary keeper
first aid provider
dietician

1. The diary keeper's bunk is immediately above that of Karl Dare, who is the sudoku expert, and graduated from Puzzlarian State University.
2. The first aid provider is the kenken puzzle expert; the dietician has not been assigned bunk A.
3. Bunk B is Knightmare Carter's.
4. Photographer Ross Flandry is not the crossword expert.

From the given, can you list which person is assigned to which bunk? ... and what is each crew member's expertise and role on the flight?