Phrases Offering and Refusing Help

I'd be happy to lend a hand.

Meaning

I'm willing to help.

Translation language

John: 'I'm struggling to finish this report by the deadline.'
Alice: 'I'd be happy to lend a hand. What part are you finding most challenging?'
John: 'I'd be happy to lend a hand. Perhaps we can collaborate on some of the tasks.'
Alice: 'This project is proving to be rather time consuming.'