Assistant on my booth at a medical conference

I work for a market research company in London, UK and we conduct studies on behalf of pharma companies at medical conferences.
We are looking for people in Stockholm to be an interviewer on our booth at an upcoming conference at the Stockholmsmässan congress centre, and interview doctors using a computerised questionnaire. Doctors approach our stand and then we will sit them next to an interviewer who will walk the doctor through the questionnaire.

The dates are 12-14 April 2014 and payment is equivalent to 100 euros per full working day.