MileStone-3:-Preliminary-Requirements.md

+**Scale of our story points:** 2 hours per story points
+
+**Persona:** Jack(BusyClerk)
+
+Jack is a very busy bank clerk. He is a 30 years old man who works 8 hours per day. Besides, He has two sons and he has to wake up early to send his sons to school every morning. In order to feel less tired and keep energy, Jack takes coffee everyday. However, it wastes so much time to get the coffee because he has to wait in line and talk with the server what kind of coffee he needs, which always makes Jack feel frustrated. At this point, he really wishes that he can order the coffee online and only need to pick it up in the store.
+
+**Epic:**
+
+As Jack, one of the function of our website can provide pre-order service by using our website, which really can help busy Jack to save much time.
+
+**User Stories and Accepting test:**
+
+As Jack, I want to be able to order the coffee what I want quickly in advance, which save my time. 
+
+Tests: 
+
+a.Test with clicking the coffee I need (pass)
+
+b.Test without clicking the coffee-add button (fail to add coffee)
+
+**Story Points:** 2 stories
+
+As Jack, I want to be able to grab the coffee correctly by using the order number or  my phone number, which can make sure that I get the order I need.
+Tests:
+
+a.Test with a wrong order number (fail)
+
+b.Test with a wrong phone number (fail)
+
+c.Test with right order number (pass)
+
+d.Test with right phone number (pass)
+
+**Story Points:** 2 stories
+
+As Jack, I want to be able to remove coffee if I wrongly click it, which can prevent wrong click.
+
+**Tests:**
+
+a.Test with removing a wrong item (pass)
+
+
+**Story Points:** 1.5 stories
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