Change in Angular 5

I do not know how to use the change in Angular. I need to bring one component to another. I am using a select, and each option of the select, is a component to which I must go. They tell me that I must use the change and a switch to achieve what I want. I intended to do so ...

<mz-select-container>
        <select mz-select
          id="options-select"
          [placeholder]="''"
        >
        <div *ngChange> </div>
            <option Flight>
                <app-flight-search></app-flight-search>
            </option>
            <option Flight and hotel>
                <app-flight-plus-hotel-search></app-flight-plus-hotel-search>
            </option>
            <option Hotel>
                <app-hotel-search></app-hotel-search>
            </option>
            <option Car>
                <app-car-search></app-car-search>
            </option>
            <option Insurance>
                <app-insurance-search></app-insurance-search>
            </option>
            <option Packacge>
                <app-package-search></app-package-search>
            </option>
        </select>
</mz-select-container>

But it does not give