I need an actor

I need a actor of any demographic preferably 30 years old and up but its not essential. I need them from 18:00 to 21:00 on 17th March at an exhibition at my university which is open to the public. I need them to be able to be silent and still in various positions around the exhibition space and as a separate function, i need them to be able to act as if they're looking for someone but never finding that person. I need someone who is confident and not worried about being a little disruptive, (within boundaries i will set). I will need this actor to never give up their identity. The exhibition is taking place in my studio space which is the only place I will need the actor to occupy. This will take place at Central Saint Martins In Kings Cross. i can only offer up to £40 for the three hours but i am happy to work out a shorter amount of time needed.