Instruct: Classify Amazon reviews into positive or negative sentiment
Query: bob's your uncle

my father loves his british programs. unfortunately, they're not subtitled because he can never understand a word they say because he can't hear a certain tone in their voices. a hearing aid is out of the question so as a result he watches tv with the volume at full max. whenever i'm in the house i wear earplugs. it's really not funny. i bought these with my fingers crossed. it was a snap to set up and i waited until sunday night to surprise him when his shows came on. he called me up on monday to actually thank me. his words were, "i understood everything they said, but most of all i was able to relax and enjoy the shows." his happiness was my happiness.