tip 1 

I,m afraid  you get the worry number .what's num you want?

Tip 2 

I just want to talk to you about my vist

Tip 3 

we're suooosed to meet on March 21th at your office .

The meeting will be held ,,,,

Tip 4 

It 's very kind of you to remind you .

Thank you for reminding me  about  our meeting.

Tip 5 

I wonder if it would be possible to provide some equipment for my product demonstration 

Could you please  prepare ,,,,,

Ti p 6  

I will check in with you again next week to reconfirm the meeting 

I'll call you again next week to confirm things up 

I just want to talk to you about my visit

we are supposed to 

拨错电话莫着急

说明来电意图

约好时间地点

及时回应和感谢

提出要求要客气

告知对方再联系