On a busy day just before April 15, Albert Accountant received a call from a local car dealer. The dealer said, "Hi, Mr. Accountant. Now, while you have income from doing clients' taxes, I have an excellent offer for you. You can buy a new Buick Century automobile completely loaded for $36,000. Al, I know you're busy. If I don't hear from you by the end of the day, I'll assume you want the car." Albert, distracted, did not respond immediately, and the dealer hung up. Then followed an exhausting day of working with anxiety-ridden tax clients. Albert forgot about the conversation. Two days later a statement arrived from the dealer, with instructions on how Albert should pick up the car at the dealership. Is there a contract?