Car cuts out when driving;;starts on a boost then dies again '''

Sorry about the short answer.... for some reason the whole first part of my message to you was deleted.

1.) Clean battery posts and post clamps with a terminal cleaner or wire brush.

a.) jump start again and see if that was the problem.

2.) If that didn't do it then clean the connections to the alternator and tighten bolts (with the ignition off)

a.) jump start

3.) you might have to take the battery to a parts store and have it checked for a dead cell.

4.) if all that fails then you might have a bad alternator.

Thanks and Good Luck, Sorry about the short answer.... for some reason the whole first part of my message to you was deleted.
1.) Clean battery posts and post clamps with a terminal cleaner or wire brush.
a.) jump start again and see if that was the problem.
2.) If that didn't do it then clean the connections to the alternator and tighten bolts (with the ignition off)
a.) jump start
3.) you might have to take the battery to a parts store and have it checked for a dead cell.
4.) if all that fails then you might have a bad alternator.
Thanks and Good Luck,