Program will suggest next train based on departure time. If a train leaves exactly at departure time it will be suggested. If suggestion is before or after train times it will tell you there's no train available.

Train suggestion

song = "***DON'T STOP...BELIEVIN'!***

Just a small town girl
Living in a lonely world
She took the midnight train going anywhere
Just a city boy
Born and raised in South Detroit
He took the midnight train going anywhere

A singer in a smoky room
A smell of wine and cheap perfume
For a smile they can share the night
It goes on and on and on and on

Strangers waiting, up and down the boulevard 
Their shadows searching in the night 
Streetlights people, living just to find emotion 
Hiding, somewhere in the night. "


times = {
	"Train 1" => 2,
	"Train 2" => 5,
	"Train 3" => 7.5,
	"Train 4" => 8.5,
	"Train 5" => 9,
	"Train 6" => 10,
	"Train 7" => 11.5,
	"Train 8" => 13.5,
	"Train 9" => 14.5,
	"Train 10" => 17,
	"Train 11" => 18,
	"Train 12" => 19,
	"Train 13" => 24,
}

best_option = 0
best_time = 0
output = true
reversed_times = times.invert
puts "What time are you leaving?"
leaving = gets.chomp.to_f


reversed_times.each do |time, train|
	if leaving > 24 || leaving < 2
		output = false
		break
	end
	(best_option = train) && (best_time = time) if leaving >= time
end

if output
	puts "You should take #{best_option} leaving at #{best_time}"
	puts song if best_option == reversed_times[24]
else
	puts "There's no train at that time!"
end