How should I respond...?

So this I meet this guy at my work I gave him my number... that night we sent texts back and forth... kinda like him... not like super into him though... so last night he wanted to hang out... I was like no maybe tomorrow... so today he texted me I am sick so I did't respond...then just now he sent me a text saying " so you want to play tonight?" Ummmm ok I have only meet him once never hung out with him... I am not some hoe... how should I respond???