Contracts Scenario

Scenario
On February 1st, John agrees to prepare Susans tax return for $1,000 and complete the work by April 15th. On April 12th, Susan calls John to check on the status of her tax return and John tells her that he wont be able to complete her return by April 15th. Susan then hires A1 Tax services to complete her tax return. A1 charges Susan $1,500.00 and completes the return on time.

Directions
What legal rights does Susan have against John?
Describe the relevant facts in determining Susans rights.
What type of event has occurred?
Are damages recoverable in the above situation? If so, what type? What amount?
List all of the issues that might affect the calculation or recovery of damages.