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'.

[EX Q]: No i need 1 tickets
[EX A]: INFORM

[EX Q]: I found 10 events of that kind. One is DC United Vs Revolution at Audi Field.
[EX A]: OFFER

[EX Q]: Oh! is it so! Where it's occurring? What is the category of this event?
[EX A]:
REQUEST