Flight to attend my brother's wedding

I attend a boarding school in Kenya, but my brother lives in the USA and has asked me to be his Best Man at his wedding on August 9th 2014.

I need funds to pay for my airfare from Nairobi, Kenya to Knoxville, TN. The cost is $1,600.00.

Please help me to attend this important day in the life of my brother.

Thanks
Trevor