Crossword Puzzle Self-identifying response

Clue: Self-identifying response

Selfish response to a request (IDONTFEELLIKEIT with 15 letters)
Trial response? (WOEISME with 7 letters)
Response to a joke in an I.M. (LOL with 3 letters)
Response to witnessing a hard punch (OOH with 3 letters)
Response (e.g. ANSWER with 6 letters)
Standard response of a kind (FORMLETTER with 10 letters)
Sonar response (ECHO with 4 letters)
Medical office responses (AHS with 3 letters)
Possible response to "My boss is leaving and I hate his replacement"? (QUITYOURSELF with 12 letters)
Attendee's response (e.g. HERE with 4 letters)