있었지만

In a sentence

• 어제 친구를 만날 약속이 있었지만 못 만났어요.

  I had an appointment to meet a friend yesterday, but I couldn't meet them.

  In this sentence, '있었지만' is used to indicate the past existence of a commitment that nevertheless could not be fulfilled.

• 아침에는 시간이 있었지만 지금은 바빠요.

  I had time in the morning, but now I'm busy.

  Here, '있었지만' conveys availability of time earlier in the day that contrasts with the current lack thereof.

• 그 식당에서 좋은 경험이 있었지만 다시 가고 싶지는 않아요.

  I had a good experience at that restaurant, but I don't want to go again.

  '있었지만' expresses the occurrence of a positive experience in the past, which does not influence the present preference.