With experience in working on different web and mobile applications I hope I can help you out with your needs.
Since there aren't much details about your requirements I would like to put in the following suggestions FYI.
The website can have up to 5 pages
-Home
-About Us
-Products/Services
-Gallery (if only needed)
-Contact
I will stick on 100% with respect to your requirements about pages.
The site will be responsive (Can be viewed on any screen size)
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The same information contained in the website can be molded into a hybrid application (Works perfectly on iOS, Android and Windows phones) .
Kindly provide the following information:
Will the design and site contents be provided?
I will be very happy to help you out with your work.