Photo Illustration by Erin O’Flynn/The Daily Beast/Getty Images and Courtesy of Nikki VargasThe following is an excerpt from author and travel editor Nikki Vargas’ new book, Call You When I Land, out Nov. 7 via Hanover Square Press.I’ve never been to this part of Bogotá before. I’m somewhere on the outskirts of the city, where the neighborhood streets are dirty and dusty, covered with a layer of beige soot that kicks up each time the wind blows. The sidewalks are empty, the doorways are darkened