"Good night," came the friendly call in reply, before the door closed.

"Besides, this is not an official visit, just an ordinary 'friendly' call."

Since you came with me, I can express my arrival in the light of a friendly call.

She was not like to pay them any friendly calls.

"They just got a friendly call and let's leave it at that."

"But tell me, have you any special purpose in this visit, other than a friendly call?"

I take it you are not here to pay a friendly call?

A friendly call now and then such as to-day's is what you like, is it not?

"I told you that my visit was merely a friendly call."

Another technique is the friendly call to an executive who happens to be a long-lost acquaintance.