The letter is in response to my phone call last week.
这封信是回复我上周的电话内容。
I am writing to confirm our meeting.
我写这封信是为了确认我们的会议安排。
Please find enclosed a copy of our agneda.
请查收随信附上的会议日程复印件。
I don't know the name of the contact person.
我不知道联系人的姓名。
To whom it may concern 相关人员手
Attached is our customer survey
随信附上我们的顾客调查表
At your earliest convenience
您方便时务请从速回复
As soon as possible
尽快