Isimsi Mehmet . His name is Mehmet. Please review my attempt at constructing a sentence. Thank You

I think it should be ´onun ismi Mehmet´but the ´onun´ is not strictly necessary.

(isim is one of the nouns in Turkish that drop their final vowel before adding any suffixes beginning with a vowel)

Saðol teyze 

 I dont think Sonunda is so old to call her ´teyze´ 

Thanks ReyhanL        but unfortunately I probably am!!

Maybe..I dont know..but still i think ´abla´ would sound better..  Who is ´young at heart ´ cannot be called ´teyze´

Well I´m definitely ´young at heart´     

  çok  Ã¾ekersin

 I met "sonunda" almost two years ago. She is a patient lady except about grammar rules Plesase be careful. Have a good day everybody.