Phrases Asking for Favors or Assistance

I'd be most grateful for your assistance with...

C1

Meaning

I would be very thankful for your help with...

Example sentences

John: 'I'd be most grateful for your assistance with this important task.'<br>

Alice: 'I'd be happy to help you with that.'

John: 'I'll do my best to help you.'

Alice: 'I'd be most grateful for your assistance with this project.'<br>