A provides B with mechanical equipment. B is a dairy product manufacturer. A agrees to supply and install a machine in B's factory. The two parties signed a letter of intent stating that this agreement is bound by the formal contract prepared by our legal adviser. The parties have reached an agreement on n, but not all major issues.

Before the machine is delivered, B advises A not to purchase the machine.

Suggest whether A has a valid contract.

Please use style fo IRAC to answer this quesion