Customise a Wordpress real estate theme with booking engine to rent properties

We have a real estate WP theme which has excellent features. We need to add a booking engine plugin for the same. The plugin should work seamlessly with the rental theme and should not change any feature of the original theme. The booking engine features should just get added. We are also open to buy paid plugins if required.

Am sorry, but we are really looking for a very short deadline. From our side, we assure faster approvals and timely required support.

Interested, send me queries if any and I will be happy to respond.

Regards,

Anil