Very little animation, not very good as a whole
Here's the compiled list of issues I have with this animation:
MS Sam voice
Simplistic/Not very good looking graphics (i.e. the people)
The picture on the wall could've been traced (there's a sprite tutorial in the NG Flash section which can teach you to trace bitmaps and remove the white bits)
Hardly any actual animation besides a bit of motion tweening and lip-syncing.
Some parts with bad grammar which makes it hard to understand (like "how did you call me?")
So basically, you can obviously draw a person to some extent, and made a decent background (simple yet somewhat effective, I hope you drew it yourself). There wasn't a ton of background noise (I'm not sure how MS Sam works if you record it and put it into a flash, but despite me not liking the voice, it was alright).
So work on actually animating something, try to make sure all the grammar is at least understandable, work on your drawings a bit, maybe try to voice act yourself or get someone else to, and... learn to trace bitmaps I guess.
Overall it was almost decent, I guess. You're not bad though =)