Twitter RSVP Bot - repost

I need a program to send a direct message back to a Twitter account for RSVP such as @nikestore The program will need to: Read the code after the hash tag Sends the code along with name and size to the tweeter through a DM I will need to have this program to be able to send in multiple direct messages This all has to be done in under 5 seconds and work with mac ios and safari