急！！！！！！！！！求助！外企新入职的自我介绍的英文邮件怎么写？

Dear all ：Warm greeting from xxx.I am the xx.It is my great honor to join xx, hope we can work better together in the future.If you have any assistance, please don't be hesitated to contact me anytime. best regards,

I'm XXX, very happy can enter into this company and everyone working together. My office is PMC clerk, new here, there are many don't understand still everyone please take care

刚进一个外企做采购，给外国分公司同事发邮件，英文，急

Dear Mr. XXX/ Madam XXX,Hi there!My name is XXX. I joined the Company's procurement department last week.I will be doing Ms Lisa's duties during her maternity leave.Please do not hesitate to contact me should you have any enquiry or need any assistance.Stay on touch.Best regards.XXX