# Cancellable Observation period in a Trade

How do you model a trade with a provision to cancel/unwind an observation period with mutual agreement before this observation period (and for a cancellation fee)? This is unlike a cancellable swap and specific to an observation period where the floating rate only for that period is cancelled. Lets say, the trade has some cap/floor provisions, do we treat it like any other cap/floor and only account for the other terms in the trade?