InterviewBit - hotel booking possible or not with python

hotelBooking.py

def hotel(self, arrive, depart, K):
    arrive.sort()
    depart.sort()

    n = len(arrive)
    i,j = 0,0
    booked = 0

    while i < n and j < n:
        if arrive[i] < depart[j]:
            booked += 1
            i += 1
            if booked > K:
                return False
        elif depart[j] < arrive[i]:
            booked -= 1
            j += 1
        else:
            i += 1
            j += 1

    return True