Nokia 6235 CDMA

I have lost my mobile phone Nokia 6235 CDMA,
I was travelling from Sodepur station to Bidhan Nagar Rd. station by train. It was jam packed.
When I have reached Bidhan Nagar Rd. station I found that my mobile phone is thefted.
how can I find out this,
IMEI No: 02605992868, Please help me. My Phone No. 92319 19065.
My contactt number is 03365350644.
Please help me.
If I got it then I will give you a reward of 1000 Rs.