Good Day-Shubh din (Shubh-good, din-day) Have a nice day is not really used... Atleast I havent heard anyone use it despite my 7 year stay in North India(Orissa) Is this final price- Yeh aapka akhri dam hai? (Yeh-This, aapka-your, akhri-final, dam-price) Where is- Kahan hai? (kahan-where) Where is central park? Central park kahan hai Hope this helps you :)

have a nice day-aapka din(day) achha(nice) ho [to show respect basically when the person you aretalking is older than you-use aapka(you)] otherwise-tumhara din achha ho shubh is used for auspicious is this the final price-kya yeh(this) akhri(final) kimat(cost) hai kimat(daam bhi keh sakte hai) where is central park-central park kahan(where) hai(is) I think you get your answer

But we prefer to say "Aapka din Mangalmay ho"

Aapka din shubh ho.

aap ka din subh(acha) ho )) आपका दिन अच्छा हो )) aap ka -you -आपका . din -day-दिन . acha,subh-nice(good) -अच्छा . ho-हो