diff --git a/data/nlu.md b/data/nlu.md
index 949ba73..9e0cc59 100644
--- a/data/nlu.md
+++ b/data/nlu.md
@@ -4,9 +4,7 @@
 - As I've said, yes.
 - I think so
 - I think yes
-- I'd just forward them the link
 - I'd like to do that
-- I'll be flying cheap
 - OK
 - Of course
 - yes, of course!
@@ -34,7 +32,6 @@
 - fine
 - fine let's do that
 - fine lets go
-- gotta love [economy](travel_flight_class)
 - i think so
 - i think so yea
 - i will
@@ -228,7 +225,6 @@
 - Yes, I would like that
 - yah
 - Fuck yeah!!!
-- i do not know the name of the airport in [new york](city)
 - okay, do it
 - yes, why not
 - offcourse
@@ -263,7 +259,6 @@
 - how bad is it if I fly across the country?
 - i want to offset the carbon from my flights
 - what's the damage of a red-eye flight
-- why does it matter how long the flight is?
 - how much CO2 will that use?
 - What is the recommended amount of offset to purchase?
 - How much carbon emissions have I generated by flying from [SFO]{"entity": "iata", "role": "from"} to [BOS]{"entity": "iata", "role": "to"} roundtrip?
@@ -592,6 +587,7 @@
 
 ## intent:express_uncertainty
 - I don't know
+- i do not know the name of the airport in [new york](city)
 - is it really true?
 - I guess that's a good thing?
 - I'm not so sure
@@ -792,6 +788,7 @@
 
 ## intent:inform
 - [NEW YORK](city)
+- gotta love [economy](travel_flight_class)
 - I am going home to [Detroit]{"entity": "city", "role": "to"}
 - I depart in [Berlin]{"entity": "city", "role": "from"}
 - I fly with [economy class]{"entity": "travel_flight_class", "value": "economy"}
@@ -800,9 +797,10 @@
 - I'll be flying from [Berlin]{"entity": "city", "role": "from"} to [San Francisco]{"entity": "city", "role": "to"}, taking the bus afterwards to [Dunedin]{"entity": "city", "role": "to"}.
 - I'll depart in [Berlin]{"entity": "city", "role": "from"}
 - I'll fly [economy](travel_flight_class)
-- I'll fly [premium economy]{"entity": "travel_flight_class", "value": "premium"}
+- I'll be flying [cheap]{"entity": "travel_flight_class", "value": "economy"}
+- I'll fly [premium economy]{"entity": "travel_flight_class", "value": "economy"}
 - I'll go and see my parents in Arizona
-- I'll take [premium economy]{"entity": "travel_flight_class", "value": "premium"}
+- I'll take [premium economy]{"entity": "travel_flight_class", "value": "economy"}
 - I'm going to [Berlin]{"entity": "city", "role": "to"}
 - I'm heading to [Berlin]{"entity": "city", "role": "to"}
 - I'm taking my family on a trip to [Las Vegas]{"entity": "city", "role": "to"}
@@ -1019,7 +1017,7 @@
 - [Boston]{"entity": "city", "role": "from"} to [New York]{"entity": "city", "role": "to"}
 - I'm flying from [Boston]{"entity": "city", "role": "from"}.
 - Yes, [Economy Class]{"entity": "travel_flight_class", "value": "economy"}.
-- Yes! I am planning to fly from [Boston]{"entity": "city", "role": "from"} to [New York]{"entity": "city", "role": "to"}. I would like to fly [Economy Class]{"entity": "city", "value": "economy"}.
+- Yes! I am planning to fly from [Boston]{"entity": "city", "role": "from"} to [New York]{"entity": "city", "role": "to"}. I would like to fly [Economy Class]{"entity": "travel_flight_class", "value": "economy"}.
 - I'm flying from [Boston]{"entity": "city", "role": "from"} to [New York]{"entity": "city", "role": "to"} in [economy class]{"entity": "travel_flight_class", "value": "economy"} on thanksgiving.  What is the environmental effects?
 - To [Seattle]{"entity": "city", "role": "to"}
 - [boston]{"entity": "city", "role": "from"} to [new york]{"entity": "city", "role": "to"}
@@ -1425,7 +1423,6 @@
 - what are carbon offsets
 - what is it?
 - what?
-- why?
 - with what?
 - Like what?
 - what is available?
@@ -1805,6 +1802,7 @@
 - tell me more here
 - Why?
 - Why does it matter?
+- why does it matter how long the flight is?
 - What's the difference between flying [economy class]{"entity": "travel_flight_class", "value": "economy"} or [business class]{"entity": "travel_flight_class", "value": "business"}?
 - Does it matter if I fly [economy](travel_flight_class) or not?
 - Didn’t get that
@@ -2211,6 +2209,7 @@
 
 ## intent:faq/oos_inform
 - Chuck Norris can stop climate change with one hand.
+- I'd just forward them the link
 - It's cold outside.
 - it's warm outside
 - Bacor
@@ -2393,8 +2392,6 @@
 - so what's the point of this?
 - what is the point of this
 - wtf is this
-- wtf
-- what the hell
 - ok but what's the point
 - I don't see the point
 - what is this about
@@ -2715,6 +2712,3 @@
 - Economy Class
 - Economy class
 - economy class
-
-## synonym:premium
-- premium economy