Ticket 1: LAX-DXB, DXB-LAX roundtrip
Ticket 2: DXB-MXP, MXP-DXB roundtrip
You nest ticket 2 inside the dates for ticket 1 to create one long trip out of two tickets.
Example:
Code:
LAX 9/4 -> DXB 9/5 (outbound ticket 1)
DXB 9/5 -> MXP 9/5 (outbound ticket 2)
MXP 9/12 - DXB 9/12 (return leg of ticket 2)
DXB 9/12 -> LAX 9/13? (return leg of ticket 1)