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'.

Input: Consider Input: I want to go ahead and purchase tickets for an event.

Output: INFORM_INTENT


Input: Consider Input: What time is it, and what is the address?

Output: REQUEST


Input: Consider Input: Yes that is correct. What time does the event start and what is the venue's address?


Output: REQUEST