I'm currently trying to simulate clicks, for example on wizzair website you can simple select
document.getElementById("ControlGroupRibbonAnonNewHomeView_AvailabilitySearchInputRibbonAnonNewHomeView_AutocompleteOriginStation").click();
This will select and promote "drop down list" I have hard time trying to select an option of that list
document.querySelector("div.wrap ul.group li[data-iata=EIN]").click()
how do you simulate the next click ?