I'm afraid so
Pronunciation of I'm Afraid So
/a͡ɪm ɐfɹˈe͡ɪd sˈə͡ʊ/, /aɪm ɐfɹˈeɪd sˈəʊ/, /aɪ_m ɐ_f_ɹ_ˈeɪ_d s_ˈəʊ/