This is completely possible, just so long as your Petsitter agrees to extend the assignment,
Please note that the Petsitter is under no obligation to extend an assignment and should not be pressured into doing so if it would cause difficulties for them.
If the booking has not already begun, you can get in touch with us by emailing firstname.lastname@example.org and she can change the dates of the booking.
If the assignment has already started, the best way to go about this is to launch a new search, notify the same Petsitter and make another booking, to follow on from the original one.
The Petsitter's rates usually stays the same as that of the original booking. However, this can be discussed between the Petsitter and the Petowner and can be changed if both parties agree.