intransitive usage of "exchange

[ansonman]

According to merriam-webster.com, the verb "to exchange" is defined below.
transitive verb
1a: to part with, give, or transfer in consideration of something received as an equivalent
b: to have replaced by other merchandise
2: to part with for a substitute
3: to give and receive reciprocally

intransitive verb
1: to pass or become received in exchange
2: to engage in an exchange

I am familiar with the transitive form of the verb. I am trying to learn how to use it intransitively. I have made up the example below.

(ex) Suppose that you've bought a sweater for your nephew, but it's too small for him. So, you want to take it back to the store and get a bigger one. You are now talking to a customer service person.

I say, "Excuse me. May I get some help?"
He says, "What can I do for you?"
I say, "The sweater is a little too small for my nephew."
He says, "Would you like an exchange or a refund?"
I say, "I would like to exchange for a bigger one."

Is the way I am using the verb intransitively correct? Please help me. Thank you very much.

[Alan]

Unnatural.

Use the transitive form with 'it' as object.