[She rests a hand on his shoulder lightly.] Không có chi. That means 'you are welcome' in my language. But I must say cám ơn, too- thank you. I hope the rest of the day treats you more kindly.

[She turns to go and head back towards her motorbike, but once she's on it she'll idle for a bit, watching him to make sure he's not still running into things.]