restaurant floor

I have lunch.

私は昼食を食べます

I have lunch after the meeting ends.

私は会議が終わった後に昼食を食べます

I have lunch with my coworker after the meeting ends.

私は会議が終わった後に同僚と昼食を食べます

I have lunch with my coworker on the restaurant floor of the department store after the meeting ends.

私は会議が終わった後に同僚と百貨店の飲食店街で昼食を食べます

I have lunch with my coworker on the restaurant floor of the department store for an hour after the meeting ends.

私は会議が終わった後に同僚と百貨店の飲食店街で一時間かけて昼食を食べます