Trying to book a flight for three people ORD-TLV. I see a bunch of availability ORD-X-PHL-TLV ("X" representing 3-4 different cities, but the PHL-TLV segment is the same flight). If I book 1 ticket on, for example, ORD-RIC-PHL-TLV, will that take away the availability on the ORD-IND-PHL-TLV?