How to edit Booking Form?

Third Party plugin Contact Form 7 is used for Booking Form in Hotel California theme.

Once you edit labels (Arrival Date, departure date, Adults etc.) according to your needs, please have a look at the following codes, as an example of Message Body:

From: [Name]
Message Body:
Arrival date: [ArrivalDate]
Departure Date: [DepartureDate]
Room: [Room]
Adults: [Adults]
Children: [Children]
Name: [Name]
Email: [Email]

For more info, please refer to the article: Setting up mail.