Our clients put alot of trust in us when we get hired so we need to conduct ourselves in a professional manner at all times. This can include replying promptly to their emails and calls, not making inappropriate jokes and comments, or making them feel uncomfortable in any way.
Acting like a professional will relax the client or model and help us to get more work. After all, people talk and word of mouth is the strongest form of advertising.
This does vary depending on clients/models but we need to figure their personality type and humour before we try making jokes. The last thing we want is an upset client, especially with another 2 hours of shooting left.
People love to talk about themselves, so ask them about themselves.