TASK DEFINITION: In this task, you are given an answer, and your task is to generate a reasonable question for that answer.
PROBLEM: I will be ready at 8 PM.

SOLUTION: Shall I book a table at my favourite restaurant tomorrow night?

PROBLEM: I am going ape on Saturday.

SOLUTION: Are you doing something fun this weekend?

PROBLEM: Unfortunately I am busy

SOLUTION:
Can I join you this weekend?