根据上下文把对话补充完整。.r-l1V._4d/Q
A: /F4O9~0M2o6b'?/^.|(p?.r-l1V._4d/Q
B: I have three pens..r-l1V._4d/Q
A: 2};A1G2x one pen, please?.r-l1V._4d/Q
B: Certainly, here you are..r-l1V._4d/Q
A: 6r)p.I;T1i1G..r-l1V._4d/Q
B: You are welcome.（不客气。）.r-l1V._4d/Q