Singapore-Da Nang via Siem Reap. Passengers from Siem Reap to Singapore join on outbound journey and stay on board at Da Nang for direct flight to Singapore. Silkair okay for a regional short haul airline. Business class resembles premium economy which is okay in a flight lasting only just over 3 hours same for food. Wine served from small 2 glass bottles which are on most airlines dished out to passengers rather than eked out. Cabin crew charming and thoughtful - a colleague who is a vegetarian hadn't ordered veggie food but stewardess offered him economy fish meal as alternative and promised to put in a request for veggie meal on his return to Singapore. Da Nang airport has no provision for business class lounge whereas at Changi T2 the Silkair lounge is a shared one - not a terrific place to spend 6 hours in transit. Silkair office in Da Nang very uncooperative not to say obstructive requiring direct communication with Singapore HQ which resulted in action.