I was recently watching the TV show 命中注定我爱你 episode 1. Youtube At 3:50 someone calls out her name 陈欣怡 and she responds "有". Could that just mean 'I'm here'?
/jau5/ /jau6 / (jyutping)
/you3/ /you4/ (pinyin)
[粵] jau5 | [國] you3
- 1 [v] have; own; possess | [ant] 冇
-  [v] there is; exist; be present
[粵] jau6 | [國] you4
- [adv] variant of 又 (e.g. 二十有六)
When she said "有够平凡" (very ordinary), '有够'(have enough) means 非常/真的(very/really)
She yelled "有!"(present!) When people was calling her. Which means "I'm Here!"