Okay, we are back. 😍
<a href="http://twitter.com/download/android" rel="nofollow">Twitter for Android</a>
Terminal 2
[]
CHANGI AIRPORT
['okay', 'back', '😍']
[]
back
okay back
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance report feedback."},
    ]

It seems that the Twitter post "okay back" does not relate to a maintenance report feedback to public flat house. It is possible that the user is simply expressing their satisfaction with something or acknowledging that they have received a message.