Mention key points about Boots, this includes that Boots: is a trusted company, has a good reputation, is the largest pharmacy health and beauty chain in the UK, Boots offers good training, many benefits for the staff etc. Then mention why you personally want to work for Boots, for example: you enjoy interacting with people, you're a regular customer at Boots, you're familiar with the store and layout, you have a general passion for health and beauty etc. Hope this helps!