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: On 1 day, next Wednesday. Styx at the PNE Amphitheatre.
Example Output: OFFER

Example Input: I found 10 events that match your request. The event is Blueface at the Fillmore Philadelphia.
Example Output: OFFER

Example Input: That sounds great. I'd like to purchase tickets for it.
Example Output:
INFORM_INTENT