Task: Question Answering
Input (English): Context: My old boss from Aero Systems called to wish me HB as well . ( His birthday is the day before mine so he always remembers to call . ) . Aside from people I know getting in touch , there are what I call fringe people who sent cards or called . My profile on Facebook wished me HB , a consumer opinion company sent an email , my dentist and insurance agent sent cards , and the Chevy dealer where I bought my car 15 months ago left a message on my phone . It 's been a great day and it 's great to have a feel good week . 
Question: Why did the writer 's old boss call to wish happy birthday ?
Output (English): Because he is a thoughtful person .