Called her up and Idk?.. asked it three times ppl just answer please need more satisfying answers?

Well i was told that a girl liked me by three of her good friends. so i umed it was true. that was 7 days ago. got her phone number yesterday from one of her friends because we didnt have school. (so much snow) so i asked her friend for it. I called her up and here is the convo. Hey______? (i didnt kno if it was really her fone number =P) she said yea. (ME) hey its _____ (HER) oh hey (ME) what are you up to?(Her) not too much (ME) what are you doing today? (HER) going sledding with my little brothers (ME) thats kool how many little brothers do you have? (her) three (ME) You Have to help babysitting much? (Her) Yea.(ME) Well i was just calling to see if you wanted to do something this weekend. (HER) Oh Sure (ME) Well you can think of something you want to do and call me back? ok? (her) yea sure (ME) ok Bye (her) Bye. i dont think it went over well.. she wasnt really talkative and i dont know what should i do srry for asking the same question three times