Looking on the internet deeply has found these results:

Assuring our best service is the most popular phrase on the web.

Assuring the best of our service. 120,000 results on the web	Assuring our best service 1102,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
If and when the new Lord Rahl should claim the throne, ...we'll decide if he's worthy of our services. A rock band played at one of our services. Some of our services are currently unavailable. This is the honor of our service. I'm used to the best of service. She and I were going to muster out at the end of our service. I'm just here to show you the continuity of our service. This finds expression in the usability of our application together with the increasingly mobile orientation of our services.	Daytime's still our best option. Our best engineers couldn't crack Intersect code. Finally, assuring our own security means making the necessary resources available, especially financial resources. It is not by chance that there is broad agreement here in Parliament that domestic competition invigorates the internal market and leads to increased efficiency, thereby assuring our prosperity. It was our best holiday together. Exercising our brains makes us our best. Daytime's still our best option. Not either of our best characteristics.

Assuring the best of our service.

120,000 results on the web

Assuring our best service

1102,000 results on the web

More popular!

If and when the new Lord Rahl should claim the throne, ...we'll decide if he's worthy of our services.
A rock band played at one of our services.
Some of our services are currently unavailable.
This is the honor of our service.
I'm used to the best of service.
She and I were going to muster out at the end of our service.
I'm just here to show you the continuity of our service.
This finds expression in the usability of our application together with the increasingly mobile orientation of our services.

Daytime's still our best option.
Our best engineers couldn't crack Intersect code.
Finally, assuring our own security means making the necessary resources available, especially financial resources.
It is not by chance that there is broad agreement here in Parliament that domestic competition invigorates the internal market and leads to increased efficiency, thereby assuring our prosperity.
It was our best holiday together.
Exercising our brains makes us our best.
Daytime's still our best option.
Not either of our best characteristics.