What are the speakers mainly discussing?

WB Next Friday’s your last day of work here, isn’t it?
MB Yes, and I start my new job the following Wednesday.
WB That’s not much time between jobs. Why don’t you take some time off before you start your new job? You must have some unused vacation time...
MB I was going to, but I also promised John, my boss, that I’d finish the Longmont project before I left. I’ve been working on it since it started last year, and it’s almost done. I’d like to see it through to the end.