tackle the problem of overtourism in Barcelona

You need to write a speech of about 800 words in word form, with making one page flyer or up to four slides, and make a flowchart to show your thinking process. Slides should not be full of words and the speech is more colloquial as it is an elevator pitch. The detailed assignment guidance is shown in the assignment task document. The other three slides uploaded are relevant lecture notes that should be useful. Go through all these slides and document before start it, please. Please note this assignment is really important to me, so please ensure you can really do that.