Best travel lens for the olympus pen e pl7?

Here is what the site says about that.

From Olympus PEN E-PL7: Olympus PEN E-PL7: A mirrorless camera by Olympus with a 16.1-megapixel Micro Four Thirds sensor, announced in 2014. The first PEN with a flip-down selfie screen. Specs - Maker: Olympus - Mount: Micro Four Thirds - Sensor: Micro Four Thirds, 17.3 x 13mm, crop factor 2.0 - Resolution: 16.1 megapixels - Stabilisation: in the body - Announced: 2014 - Type: mirrorless camera Focal lengths on it Lenses frame like 2.0 times their focal ...

From Travel: Travel: A travel camera has to be good at everything and light enough that you still carry it on day five. Landscapes, food, street scenes, people, the inside of a dim church: you'll shoot all of it, often in a hurry, and you won't want to change lenses on a crowded square.

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