I will upset your plans.

I will foil you.

I will thwart your plans.

I will queer your pitch.

I will spike your guns.

It will take only a couple of days

I will put a spoke in your wheel.

Will I see you later?

I will pay by credit card.

He will listen to reason

I will be back soon.

We will need that anyhow.

Will you marry me?

I will call a spade a spade

I will leave it to you.

I will pay in cash.

Will you do me a favor?

I will give him/her a blowing up.

I will have the same, please.

Will they bring me dinner?

I will come as soon as I possibly can

Will you kindly hold your tongue!

Will you tell me a story?

Will you pick me up at home tomorrow morning?

I will be back again soon.