Changed trip dates

Dear Folks,

I want to know if there is a Standard Table where i can seee the Trip Changed dates with the history dates?

For example - If a Trip Request is created from 01.09.2015 to 05.09.2015 and got approved by the Manager.

Now my trip planned is changed and i have changed the dates in the approved trip request from 01.09.2015 to 06.09.2015.

I want to see the dates likes Earlier - 01.09.2015 - 05.09.2015

                                           Now   -  01.09.2015 - 06.09.2015 

I have cheched the tables FTPT_REQUEST, PRTV_HEAD, PRTV_PERIO but they store only the dates not the Trip changed history with the dates.

Please help me if there is standard table for the above mentioned scenario.

Thanks & Regards,

Nidhi