Given the task definition and input, reply with output. In this task, you are given a date in a particular format and you need to convert to another format. If given format is "dd/mm/yyyy" then convert to "mm/dd/yyyy". If given format is "mm/dd/yyyy" then convert to "dd/mm/yyyy".

08/12/1951, input_format=dd/mm/yyyy

12/08/1951