I would be grateful if someone could help to correct my e-mail as below.
A test for two buildings(ABC & QWE) have been scheduled on a date, but ABC have a reason need to be postponed.
Dear Cilent
To achieve smooth run down, we would like to propose the trial test of two buildings(ABC & QWE) carried out on the same day. The date of test will be rescheduled and informed soon.
Engineer