I am a tourist/visitor from China.If you see the note,(which means i got lost with my parents) could you please call my parents as soon as possible,the phone number is 666666.And we will give you some money to thank for your return.
PS：
1）首先你别用太难的词汇,万一是个英语也不太好的人找到,简单点的英文容易理解.
2)打括号的那句是我加的意思是“那意味着我和爸爸妈妈走失了”
3）别怪我想太多,这后面加上了“重金答谢”,万一被绑架了怎么办,可能我过于担心,可是我觉得也许不加也OK.要是他送来的话应该不图什么回报的吧,我比较天真觉得别人应该不贪什么的,哈哈!
个人见解,忘见谅!