How do I track services proposed?

How do I track services proposed?

I need to be able to track:

1) What services I am proposing to a potential client

2) How much work (variable monthly retainer or set number of hours depending on job) I am proposing for that particular service.

Here's an example:

If I am proposing a landscape job to someone I might quote them $XXX (hourly rate) for an 8 hour job.

I might quote them a flat fee of $XXX for a job.

I might quote them $XXX/month for an ongoing monthly service.

How do i keep track of what I am proposing to each individual client?