Real life conversarion in iphone

Months ago, I found a very cool conversation idea applied to an iPhone from one of the eLearning students/heros, but I cant 'find it any more.
Could you please help me build a chat conversation on an iPhone (with the "..." that appear when a person is typing)?

I've been looking all over the e-learning examples and I cant' find it. Maybe the person who developed this idea read this message and can send me the link to his/her idea.

Thank you in advance.

 

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