OPINION

On this appeal, we are asked to decide whether the Answer and Counter-Claim of Plaintiff-Appellant Hi-Tech, Inc. stated a claim for either breach of contract, tortious interference with contract, or violation of section one of the Sherman Act. We hold that Hi-Tech did state a claim for breach of contract and tortious interference with contract, and will reverse the District Court on that ground. We will also reverse the District Court because it should have allowed Hi-Tech the opportunity to amend its antitrust claims.

The facts of this case are familiar to the parties, so we will only briefly summarize them here. Jame Fine Chemicals, Inc., is the sole United States manufacturer of tannates, an essential ingredient in a certain type of cough syrup. Before September 17, 1999, Jame Fine provided tannates to both Carter-Wallaee, Inc., the sole manufacturer of branded cough syrup containing tannates, and Hi-Tech, the manufacturer of a generic equivalent cough syrup. On September 17, 1999, Hurricane Floyd severely damaged Jame *604 Fine’s factory, stopping the production and sale of tannates for some time.

Hi-Tech alleged that in the weeks following Hurricane Floyd, Jame Fine orally agreed provide tannates to Hi-Tech as soon as production resumed. Hi-Tech also alleged that, in the weeks following Hurricane Floyd, Jame Fine confirmed several Hi-Tech purchase orders orally and in a letter dated October 22, 1999. In January 2000, however, Jame Fine informed Hi-Tech that it would not supply tannates to Hi-Tech because it had entered an exclusive licensing agreement with two other customers, one of whom was Carter-Wallaee.

On these grounds, Hi-Tech alleged that Jame Fine had breached its contract with Hi-Tech and that Carter-Wallaee had tor-tiously interfered with that contract. Hi-Tech also alleged that the agreement between Jame Fine and Carter-Wallaee violated section 1 of the Sherman Act because it was an attempt to remove Hi-Tech as a competitor of Carter-Wallaee in the market for cough syrups with tannates. Hi-Tech did not, however, explain why the relevant market should be limited to cough syrups with tannates. The United States District Court for the District Court for the District of New Jersey dismissed each of these allegations because they failed to state a claim for which relief could be granted. See Fed R. Civ. P. 12(b)(6). For the reasons summarized below, we will reverse.

Our review of a grant of a motion to dismiss is plenary. McClintock v. Eichelberger, 169 F.3d 812, 816 (3d Cir. 1999). Thus, we will reverse the District Court unless it is clear that no relief could be granted under any set of facts consistent with the allegations. Hishon v. King & Spalding, 467 U.S. 69, 73, 104 S.Ct. 2229, 81 L.Ed.2d 59 (1984).

Applying that standard, we hold that the District Court erred when it dismissed Hi-Tech’s breach of contract and tortious interference claims. The District Court dismissed these claims because it found that Hi-Tech’s pleadings did not allege the existence of a contract. It is true that a contract requires an offer and an acceptance. See Weichert Co. Realtors v. Ryan, 128 N.J. 427, 435, 608 A.2d 280 (1992). It is also true that, because this alleged contract was for the sale of goods, the New Jersey Uniform Commercial Code required that it be in writing to be valid. See N.J. Stat. Ann. § 12A:2-201. That code also provides, however, that when the parties to a contract are merchants, the writing requirement can be met by a written confirmation of a prior oral agreement. N.J. Stat. Ann. § 12A:2-201(2).

Under this law, Hi-Tech has alleged that a contract exists. It alleged that it made an oral agreement with Jame Fine in the weeks after Hurricane Floyd, which was confirmed, in writing, by the October 22, 1999 letter. That letter, though vague and ambiguous, could be interpreted as a confirmation of a prior oral agreement. It stated that, “We [Jame Fine] do not expect to have material available for shipment until the Spring of 2000.” If that statement is consistent with a previous oral agreement, a reasonable fact-finder could interpret it as a confirmation. Hi-Tech may be unable to prove these allegations at trial, but, if it does so, it would prove the existence of a contract. The District Court was, therefore, too quick to dismiss Hi-Tech’s contract claims.

The District Court also erred by failing to give Hi-Tech an opportunity to amend its antitrust claim. The District Court properly found that Hi-Tech failed to plead a violation of Section 1 of the Sherman Act because it failed to allege a *605 horizontal conspiracy and failed to adequately define the relevant market. See Queen City Pizza, Inc. v. Domino’s Pizza, Inc., 124 F.3d 430 (3d Cir. 1997). The District Court, however, should have allowed Hi-Tech an opportunity to amend its complaint. See Shane v. Fauver, 213 F.3d 113, 116 (3d Cir. 2000). As this Court explained in Borelli v. City of Reading, 532 F.2d 950 (3d Cir. 1976), and confirmed recently in Shane v. Fauver, 213 F.3d at 116, district courts should, before dismissing a claim:

expressly state, where appropriate, that the plaintiff has leave to amend within a specified period of time, and that application for dismissal of the action may be made if a timely amendment is not forthcoming within that time. If the plaintiff does not desire to amend, he may file an appropriate notice with the district court asserting his intent to stand on the complaint, at which time an order to dismiss the action would be appropriate.

Id. at 951 n. 1. See also, District Council 47 v. Bradley, 795 F.2d 310 (3d Cir. 1986) (holding that if the complaint was deficient, the District Court should have followed the procedure outlined in Borelli and granted leave to amend even though the plaintiff never sought leave to amend). These rules are clearly applicable to this case. The District Court should not have dismissed Hi-Tech’s claims without granting the opportunity to amend.

The District Court, therefore, erred in dismissing the claims for breach of contract and tortious interference with contract. It also erred by failing to provide Hi-Tech an opportunity to amend its antitrust allegations. We will, therefore, reverse the District Court on both issues and remand for further proceedings.