In this case, I think, for ticketing, customers do not want to travel bag. But when the departure date may have more luggage and baggage was not added in advance. Thus, we find that it does not dictate the terms.
In this case I think Customers do not want to book tickets on luggage. But on arrival may be much baggage were not added baggage in advance. We are accused of not telling the condition.
In this case, I think. On the day of booking customers don't want a suitcase. But when the trip may have much baggage and does not increase the baggage beforehand. Therefore, we didn't tell the alleged condition.