This is US informal conversation:
A: Sorry I couldn't make the meeting that day. Did you guys all come there?
> "come" does not match "there."
"Sorry I couldn't make the meeting. Were you guys all there?"
B:ⓐ Yes, we all came except for you.
ⓑYes, we all came other than you.
"Yup. Everyone was there but you."- or -
"Yup. We were all there but you."
A: Sorry, can we make a meeting again?
> "make" a meeting is non-standard English, but it might be in common use in some industries or locations (New York, maybe, or Hollywood)
"Sorry. Can we set up another meeting?"
B: When are you availble?
> "available" is misspelled.
"When are you available?"
A: ⓐHow about next week this day.
ⓑHow about this day next week.
ⓒHow about today next week.
"How about a week from today?"
B: What time?
:ⓐ :Same time as now.
(This is fine)
You might also say
"How about the same time as now?"
"How about 10 am?"
Student or Learner