(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.
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.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.