CAT 13 Accompanied Travel Fare Component This category is used as a component of a rule when travel with one or more other passengers is necessary to qualify for the fare. It may be used to define travel restrictions based on the portion (s) of a trip where travel together is required and/or fare class/booking codes of accompanying passengers. Assumption. When this category is not present, or when the category provision is not applicable to the fare in question, then there are no Accompanying Travel Requirements.