UK’s Withdrawal from the EU

If the Government were to bring forward legislation in accordance with a vote in Parliament, would they—as I presume—vote for that legislation? Will the right hon. Gentleman also explain what the circumstances would be if there were a disagreement between the Government and the EU about either the length or terms of the extension? Would the Government bring it back to Parliament for a further vote, rather than simply dismissing it and deciding to shift to no deal instead?