German phrase
Was wäre ~ für Sie?
Meaning
Would ___ work for you?
When to use it
It asks if a time suits you. It is polite for arranging meetings.
Example dialogue
Was wäre morgen um 15 Uhr für Sie?
Would tomorrow at 3 p.m. work for you?
Das passt mir gut, danke.
That works well for me, thank you.