text: Nicholas: What do you think about this phone cover?
  Nicholas: <file_photo>
  Frank: Wow. Cool!
  Nicholas: I found an online shop with phone cases. Take a look: <file_other>
  Frank: These are really great! You gave me another idea for Christmas gift. Thx a lot.
  Nicholas: Haha. No problem. :)
target: Frank really likes the phone covers Nicholas is showing him. 