Is there a bus here going to Boston?

Yes

Plenty of them Adelina..check these:Greyhound,The Big Bus , on the web...

Yes there is a bus co there called OurBus which leaves for Boston once a day. I believe there may also another company, just Google it and check for schedules :)

Of course there is.

Duh!

If I am traveling,can I buy ticket on the same day or do I have to make a reservation?

There is no direct bus to Boston but you have to change a couple of buses and then go; hope that helps