If the emotion of happiness is present in the one of the dialogues of the conversation, then output Yes otherwise output No

I am really interested in buying this television .  That's great !  How much are you selling it for ?  This TV is $ 2500 .  You can't be serious .  That's how much this t . v costs .  That's too expensive for me .  This television is of very high quality .  You can't go down on the price ?  By how much ?  I'll buy it for $ 2000 .  I'm sorry , but the price is final . 
No