A put an advertisement stating that " tutorial service for primary student. The price is HK150 per hour. and telephone number 55558888." B see the advertisement and find A. B communicates with A, telling A that wanting A to work every Monday and Friday and work from 5pm to 6pm. but B would like to talk to her husband first since the price is a little bit high. A says she can work for this period. But she can only accept HK$150 per hour. B says that if her husband is ok with the price, then she will let B know. is it B makes an offer to A? I pretty sure that this advertisement is an ITT, but B is missing the material term (the price). so, is it still a valid offer to A? If B is not making an offer, so is it A to make an offer? since she provides the price and there have definite terms