I need to fake being an interesting and charismatic person for 3 days

I am introvert and for the next 3 days I somehow need to pretend being an interesting and charismatic person as I will be meeting a lot of new people during these 3 days. I know this is not the right approach to things but I need some quick fix to be able to do it just for the next 3 days (if that makes sense. I’ll be working on it for long term on my pace but right now circumstances need me to be an outgoing people’s person)