happy to

(I'd be) happy to (do something)

Glad or eager to do something. Sure, I'd be happy to help! What do you need? Always happy to help.
See also: happy, to
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

(I'd be) happy to (do something).

 and Be happy to (do something).
I would do it with pleasure. (The something is often replaced with a description of an activity.) John: I tried to get the book you wanted, but they didn't have it. Shall I try another store? Mary: No, never mind. John: I'd be happy to give it a try. Alice: Would you fix this, please? John: Be happy to.
See also: happy, to
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
See also:
References in classic literature ?
Then he appeared suddenly who has a right to appear when and how he will and rebuked me for never having written, and when I told him that I had been literally too happy to think of writing, he seemed to take it as a reflection on himself that I could be happy alone.
She had often said she wanted to do something splendid, no matter how hard, and now she had her wish, for what could be more beautiful than to devote her life to Father and Mother, trying to make home as happy to them as they had to her?
"Think Happy to Stay Happy: The Awesome Power of Learned Optimism" is an ideal 'positivity' guide filled from cover to cover with ideas and inspiration to help you learn how to be happy.
"Think Happy to Stay Happy" is the perfect collection of power thoughts and insightful quotes and affirmations that express some of the best ways to "stay happy".
"Think Happy to Stay Happy" reveals just how we can: Learn to be happy; Learn about how a "gratitude adjustment" can help you stay happy; Attain a state of bliss.
We decided to call HAPPY to our system mainly due to the unhappiness feeling product of this frustration.
* Attempt to extend HAPPY to other gestural and graphic sign systems, such as PIC, PCS, Bliss, Rebus, etc.