1) Looking forward to your early reply，
2) Hoping to hear from you soon，
3) I hope to hear from you very soon.
4) We look forward to your reply at your earliest convenience.
5) Your early reply will be highly appreciated.
6) I hope everything will be well with you.
7) Please let us know if you want more information.
8) I wish you very success in the coming year.
9) Please remember me to your family.
10) With best regards to your family.
11) All the best.
12) With love and good wishes.
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