Hartley sends an email to Cicely, offering to sell Cicely he…

Hаrtley sends аn emаil tо Cicely, оffering tо sell Cicely her bedroom furniture for $450. Cicely first replies with an email stating: “No I do not want to buy the furniture.” Cicely changes her mind the next day and emails Hartley: “I accept your offer to buy your bedroom furniture for $450.” Do Harley and Cicely have a valid contract?