it's my pleasure,with my pleasure

It's my pleasure.表示回答对方感谢用语，意思是“不客气”“不用谢”

With pleasure.表示答应对方的请求或接受对方的意见，意思是“很愿意这么做”“很乐意这么做”

例:1。"Thanks a lot." "It's my/a pleasure"

“太感谢了!”“不用谢”

2。"Could you give me a lift into town?""Yes,with pleasure."

“你可以载我进城吗？”“好的，谢谢”