Go to the Far East Train Station next to Galbadia Garden. Pay 3,000 gil to buy a ticket and board the train. Inside, speak to Rinoa and Irvine then try to leave. The others enter and the train finally departs for Deling City. Follow Irvine to the next compartment and speak to Selphie. Afterwards, return to the main group. When the cut-scene ends, you’ll arrive at Deling City Station.