sentence: Firstly , I must inform you that I was dissatisfied with the hotel receptionist , because he forgot to place my wake - up call and , as a result , I overslept and I missed my flight .
modified: Firstly , I must inform you that I am dissatisfied with the hotel receptionist because he forgot to place my wake - up call and as a result I overslept and I missed my flight .
transformation: VERB:TENSE, PUNCT, PUNCT, PUNCT