Proposal on customer satisfaction within fast food chains

How do you go about this part if all you know is that is is to design a tool to help them improve restaurant quality and increase customer satisfaction.
Methodology
Research Design: Specific quantitative method to be used and rationale (Ex. experiment, survey, etc.)
Operationalization of Variable: Specification of the concepts to be measured, the operationalization of the variable(s) to be used to measure the concepts, the question(s)/scale(s) to be used and the resulting level of measurement.
Sample design: Specification of the population, method, sample size, specific procedures, and justification.
Data collection procedure: Explanation of how the data will be collected.
Intended data analysis: How will you analyze the data to test the hypotheses and provide answers to the research questions, including descriptive and inferential statistics? Provide your rationale.
Limitations: Any recognized limitations of the proposed study.
References are needed to back your statements at least 8 references