Story Telling Unit: Feedback from my script The Meeting draft 1

This is the feedback Simon gave me after I handed in my first draft of the script The Meeting:

Simon basically says that my dialogue is the main problem because it lacks believability.

Overall Simon didn't like my dialogue as it was too robotic, I agree with this to some extent as I didn't understand how to portray my male character very well. The ending was rushed so I think it does lack some believability. The idea of a double date didn't go very well and I need to change it.