Create a single intent called 'hotel_service' and add all possible utterances related to booking, canceling, and requesting extra services.

Create separate intents for 'book_room', 'cancel_reservation', and 'request_extra_service', and add specific utterances for each intent. Create entities to capture relevant information such as room type, date, and service type.

Create a single intent and use regular expressions to extract all relevant information from user messages.

Create separate intents for each specific service request and train the model to recognize the context of each request.