The attached data set contains vacation packages sold by a travel agent by quarter over a 12 year period.

Add a sequential observation number and convert the quarter number to a set of dummy variables. Run a linear regeression model that uses the observation number and the quarterly dummies for Q2-Q4 (Q1 is the base case) to predict Vacation. Based on this model, make a forecast for 2020. What is the forecast for Q2? (Report your answer as a whole number)

Year	Quarter	Vacation
2008	1	500
2008	2	147
2008	3	1314
2008	4	673
2009	1	984
2009	2	584
2009	3	1449
2009	4	1125
2010	1	209
2010	2	458
2010	3	1357
2010	4	544
2011	1	483
2011	2	280
2011	3	1392
2011	4	780
2012	1	340
2012	2	1003
2012	3	1692
2012	4	783
2013	1	781
2013	2	409
2013	3	1657
2013	4	792
2014	1	671
2014	2	769
2014	3	1068
2014	4	520
2015	1	616
2015	2	775
2015	3	1215
2015	4	514
2016	1	232
2016	2	492
2016	3	1581
2016	4	1028
2017	1	551
2017	2	869
2017	3	1114
2017	4	476
2018	1	405
2018	2	412
2018	3	1121
2018	4	554
2019	1	666
2019	2	729
2019	3	1283
2019	4	923