two delimiters with awk, one of them blank

Shell Programming and Scripting
1

Hello,

I need use comma and spaces as field delimiters, but I can't:

text:

hello myfriend,I need,some help

I need something like:

awk -F"<blank>|," '{print $1, $3}'

Thanks

2 
awk -F"[ ,]" '{print $1, $3}' file
3

This also seems to work...

awk -F"[[:blank:],]" '{print $1, $3}' infile
4

or to include tabs and to treat consecutive delimiters as one:

$ echo 'hello myfriend,I need,some help'| awk -F "[ \t,]*" '{print $1, $3}'
hello I