How can I show a route map from the current location to some destination (some address) location?

In React Native I am developing a sample application using react-native-maps. It's working fine, but I didn't find out: How can I show RouteMap from the current location to another address or Location?

Here this is my code:

<MapView
    ref='map'
    style={styles.map}
    region={this.state.mapRegion}
    showsUserLocation={true}
    followUserLocation={true}
    zoomEnabled={true}
    pitchEnabled={true}
    showsCompass={true}
    showsBuildings={true}
    showsTraffic={true}
    showsIndoors={true}
    onRegionChange={this.onRegionChange.bind(this)}
    onPress={this.onMapPress.bind(this)}
>
    {this.state.markers.map(marker => (
        <MapView.Marker
                coordinate={{
                  latitude:  marker.Latitude  || this.state.lastLat  || region.latitude,
                  longitude: marker.Longitude || this.state.lastLong || region.longitude
                }}
                image = {
                 marker.EmergencyService == true ?(
                   require('./Imgs/emergencyService.png')):
                   (require('./Imgs/regularService.png'))
                }
                onCalloutPress={() => this.bookDoctorsAppointment(marker)}
        >                
            <MyCustomMarkerView marker={marker}  navigator={this.props.navigator}/>
        </MapView.Marker>
    ))}
</MapView>

Actually in this code I am showed some list of markers, but I don't need the all markers route map... I want only some of the particular markers to the current location.

Here I attached the image I want like this: