帮我看看2句英文有没有语法错误,在线等啊,快

我觉得不用改为had。不过看上去你是在写一个受到面试通知的感谢信，这样的话只要不是非常离谱的语法错误，都没有关系的。但更重要的是，你写的语言要流畅一些，更接近老外的用法。我觉得这样写比较好：

The officer told me that I can have a telephone interview. Thanks the committee for giving me such a good opportunity. I will follow up with you for the interview arrangement, anytime works for me.

The officer told me that I have a chance of telephone interview.
have改为had

The officer told me that I [had] a chance of [a] telephone interview. Thanks for this precious opportunity [given by the admission committee](这样说比较正式，有礼). I would ask you about [the] interview arrangement.To me, anytime is [available].

The officer told me that I had a chance of a telephone interview. Thanks for the committee . They gave me this precious opportunity. I would ask you about the interview arrangement.To me, anytime is available.

第二句开头应该用i appreciate带起。后面这么写and,later i would call you for some detail,OK?i am available to you,anytime

that后的have应改为had,后面telephone