To make your booking system translatable follow these steps:
Step 1 - At first, You will select required language to display from Settings-> Company.
Step 2 - After choosing preferred language you just need to set Labels (Settings-> Labels), to write your translations.
Step 3 - Select your language to translate the labels.
Step 4 - Now you can change you language labels in right side. Here we show English as default Label. As you change the labels and update, it will show on front, default or unchanged labels will show in English only.