You can respond it in many ways. It depends on how dear is the opposite person to you.
Salaam
Salaam jan,
Salaam bar shuma aziz
...........
The Farsi (Persian/Iranian language) phrase "salam azizam"means "Hello, Dear/Sweetheart/Friend" in English(i.e., "salam" means "hello"; "azizam" is a term of endearment).
salam azizam khobi
Slam azizam azizam salam duuustet mikha. Gond
Azizamazizmy dear - azizam
It is actually spelt 'miboosamet azizam' which means 'i'll kiss you my dear'
You can say "Sobh bekheir azizam" in Farsi, which means "Good morning my dear."
selam azizam in persian
you are very beautiful
sweetie . my darling . my love . my dear one.
Salam alikum Salam alikum Salam alikum
You can say "عزیزم" (azizam) in Persian to mean "my darling."
Salam Fayyad is Muslim