modify alert condition for ease with translation

Author: tanquar

src/examples/src/flight-booker/App/composition.js

@@ -16,9 +16,9 @@ export default {
 
     function book() {
       alert(
-        `You have booked a ${flightType.value} leaving on ${
-          departureDate.value
-        }${isReturn.value ? ` and returning on ${returnDate.value}` : ``}`
+        isReturn.value
+          ? `You have booked a return flight leaving on ${departureDate.value} and returning on ${returnDate.value}.`
+          : `You have booked a one-way flight leaving on ${departureDate.value}.`
       )
     }
 

src/examples/src/flight-booker/App/options.js

@@ -39,9 +39,9 @@ export default {
   methods: {
     book() {
       alert(
-        `You have booked a ${this.flightType} leaving on ${this.departureDate}${
-          this.isReturn ? ` and returning on ${this.returnDate}` : ``
-        }`
+        this.isReturn
+          ? `You have booked a return flight leaving on ${this.departureDate} and returning on ${this.returnDate}.`
+        	: `You have booked a one-way flight leaving on ${this.departureDate}.`
       )
     }
   }