我买两张10月3号的票。
I'd like two tickets for October 3rd, please.
对不起，卖完了。
Sorry, we're sold out.
Do you have any tickets for the concert? (还有那场音乐会的票吗?)
Sorry, we're sold out. (对不起，卖完了。)
有什么时候的票?
When do you have tickets?
Which date do you have tickets for?