John, an avid cyclist, decided to sell his high$-$end road bike. He posted an advertisement

online on Wednesday, $20$th September, describing the bike's specifications and setting a

price of $$2,000.$ Another cycling enthusiast, Emily, saw the advertisement and was

interested in purchasing the bike.

Emily contacted John at $12\mathrm{.}00$ pm on $20$th September via the online forum and expressed

her interest in buying the bike. Emily asked John if he would consider $$1,600$ for the

bike, and she would pick up the bike in two days. Emily provided her contact

information, including her mobile number and email address. Although John wanted

$$2,000$ for the bike, he was moving interstate and was keen to sell his bike. John

messaged Emily on her mobile at $2\mathrm{.}00$ pm on $20$th September and said he would take

$$1,800$ for the bike.

At $2\mathrm{.}30$ pm on the same day, John received another offer for the bike, but this time for

$$2,200$ from a different buyer named Michael. Excited about the higher offer, John agrees

to sell the bike to Michael. John tries to call Emily on her phone, but she does not answer.

John emailed Emily at $3\mathrm{.}00$ pm$,$ explaining that he had received a better offer and no

longer wanted to sell the bike to her.

At $4\mathrm{.}00$ pm on $20$th September, Emily checked her emails and saw John$$s email advising

that he did not want to sell her the bike. After checking her emails, Emily read the text

message on her phone sent at $2\mathrm{.}00$ pm earlier that day.

Emily is frustrated that John has sold the bike to Michael as she believes she had a valid

contract to purchase the bike.

Identify the legal consequences of all communications, based on the principles of offer

and acceptance and any potential issues related to instantaneous communication, with

reference to decided cases and advise Emily of her contractual position with John.$($I want in IRAC format$)$ please advice