Add message buttons to control the user flow

src/app/pipes/capitalize.pipe.ts

@@ -0,0 +1,13 @@
+import { Pipe, PipeTransform } from '@angular/core';
+
+@Pipe({
+  name: 'capitalize',
+})
+export class CapitalizePipe implements PipeTransform {
+  transform(value: string): string {
+    if (!value) {
+      return '';
+    }
+    return value[0].toLocaleUpperCase() + value.toLocaleLowerCase().slice(1);
+  }
+}