It depends on your schedule.Please tell me your schedule. It would help me more. Thanks in advance. 如果是e-mail的话那主题可以用Re:Visit Time 开头肯定是DearXXX,(直接写他的名字就好了)
When would it be convenient to visit you? 还有一种更地道的.口语化一点的.When are you availabe? 电影中常听到类似的说法.你去拜访某人,而某人不在,秘书在,你问秘书,秘书就会说 He is not available now.他干嘛嘛去了. available [E5veilEbl] adj.