How do I reply to a guy who texted me after a date saying "I had a good time, have a good week"?

I honestly think it's a diss because I think if he liked me he would want to talk to me more, but he is saying have a nice week. How can I respond in a way that is polite and shows I have interest yet not look desperate?

How do I reply to a guy who texted me after a date saying "I had a good time, have a good week"?
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