You are given a sentence from a conversation between a human and a virtual assistant. Your task is to classify the sentence into one of the following five action categories - INFORM, INFORM_INTENT, OFFER, REQUEST, REQUEST_ALTS. If the sentence is about informing something, generate 'INFORM'. If it is about requesting something, generate 'REQUEST'. If the sentence mentions requesting an alternative option than the one provided, generate 'REQUEST_ALTS'. Similarly, generate 'OFFER' if the sentence is offering some information. If the sentence is about showing intent to do something, generate 'INFORM_INTENT'.

Example Input: I'm in the mood to attend an interesting event with my friends. Would you help me find an upcoming Music event, please?
Example Output: INFORM

Example Input: I found 10 concert events in New York. What about Amber Run Brooklyn at Warsaw?
Example Output: OFFER

Example Input: The event is Mets Vs Diamondbacks at Citi Field.
Example Output:
OFFER