Services offered by the assistant - What to expect from the assistant

The assistant assists all people who have difficulty getting around the airport and/or making use of the facilities.

Can the assistant help me with my baggage?
Can the assistant provide medical services?
Can the assistant accompany me in the toilet?
Will the assistant come shopping with me?
Will I be able to get food/drink while the assistant is accompanying me in the waiting room?
Will the same assistant accompany me at all times?