The phrase "reason for the call" is correct and usable in written English.
You can use it to describe the purpose of the phone call when you want to provide an explanation. For example: "I'd like to explain the reason for the call - I'm interested in learning more about your services."
When Frazier got the telephone message, he instantly knew the reason for the call.
A MI5 memo said: "Their alleged reason for the call was to apologise to Lord Boothby for any inconvenience caused to him over his cheques.
He called Jack's number in Childress, something he had done only once before, when Alma divorced him, and Jack had misunderstood the reason for the call, had driven twelve hundred miles north for nothing.
But the reason for the call, it turned out, was something else entirely: a man passing himself off as Michael Finkel of the New York Times had just been charged with four murders.
After some mutual disparagement of the markets, the rumors and the pressure on Fannie Mae and Freddie Mac, Mr. Fuld asked candidly: "Can't we try to do something together?" It was a bold question and Mr. Mack had suspected it was the reason for the call.
About 25% of the time, an intrusion or significant loss is the reason for the call.
That is the reason for the calls for more openness.
Consistent with previous studies that examined night calls, the assessment of patients with complaints or changes in vital signs was the most common reason for the calls in Harvey's [ 11] and Wong's reports [ 16].
"One of the reasons for the call is because Secretary Hagel will be participating in the Nato defence ministerial later this week and planning for post 2014 forces will be on the agenda," said spokesman Jay Carney.
The trust said the main reasons for the calls were assaults, falls, breathing problems and trauma.
Therefore, the reasons for the calls were excluding the ones that were placed for new admissions.
