Email or call me with the dates of your assignment to check availability. If the timings or dates are not arranged yet, no problem, I understand the difficulties of arranging shoots, particularly when access and permissions can be tricky.
If you have a provissional date for a shoot, I can pencil it in my diary, and will contact you before taking other bookings for that date.
I am happy to attend meetings to discuss shoots, but depending on location may have to charge for travel time and costs.