Read the following context and answer the question.
Context: So she gave me her promo sketchbook with a little Pyro sketch in the back : ) nadav , I did n't see Tom Grummet . Mind you , as I said , artists are difficult to find this weekend . But I do n't think he 's there . I 'll still keep an eye out tomorrow . Ca n't find DC Comics Presents : Flash # 1 anywhere .
Question: Where did the narrator spend their weekend ?
Answer:


They spent their weekend at a comic book convention .