Find a Pattern in Column with Pandas

This a a related with my previous question here

    Direction   Product StoreFrom   StoreTo DateYear DateMon DateDay
1   out         melon   StoreQ      StoreP  2017     06      02
2   out         cherry  StoreW      StoreO  2017     06      14
**3   out         Apple   StoreE      StoreU  2017     08      02
4   in          Apple   StoreE      StoreU  2017     08      12**
5   out         melon   StoreQ      StoreP  2017     09      02
**6   out         cherry  StoreW      StoreO  2017     10      07
7   in          cherry  StoreW      StoreO  2017     10      14**
8   in          Apple   StoreE      StoreU  2017     11      12

and want to reach

        Direction   Product StoreFrom   StoreTo DateYear DateMon DateDay TimeDiff
    1   out         melon   StoreQ      StoreP  2017     06      02      -
    2   out         cherry  StoreW      StoreO  2017     06      14      -

    5   out         melon   StoreQ      StoreP  2017     09      02      -

    8   in          Apple   StoreE      StoreU  2017     11      12      -
    9   came        Apple   StoreE      StoreU  2017     08      12      10
    10  came        cherry  StoreW      StoreO  2017     10      14      7

Program should create a new row if in Direction column out and in in consecutive order while Product StoreFrom StoreTo row are similar and delete duplicated rows.

Is there anyway to do this?