| http://www.w3.org/ns/prov#value | - are flow diagrams of alternate fare search requests and search result determinations, depending upon user preferences and flexibility; [0017]FIG. 4 is a flow diagram of a process for determining whether to book a return itinerary or to ask the user to request a continued search; [0018]FIG. 5 is a block diagram of a distributed communication network system according to the invention; and [0019]FIG
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