Talking to a travel agent. I say:
Please help us make the name and travel date changes.
Is this okay?
You're not asking the agent to help you to do anything, although it might be helpful to you if they did it. So say:
'Please make these changes to the name and travel dates [if that's possible].'
Or, in a more friendly tone:
'I want to change the name and travel dates. Can you do that?'