求一组老师与学生的英语小对话,表示学生感谢老师的,

s：thank you so much Mrs. Liu.
t: Why are you thanking me?
s: You helped me a lot this term.
t: Oh, it was my responsibility to teach you.
s: But I stil want to thank you !
t: Well, you are welcome.
s： Would you like to come to my home to have dinner with me tonight?
t: No, but thanks anyway.
s: I just want to thank you.
t: I won't have time tonight. Maybe next week.