买票 

Pinyin: mǎi piào 
Meaning：To buy a ticket
Sentence:  他这样年龄不需要买票。He needed no ticket at that age.

More: 

买： 

Pinyin: mǎi
Meaning: Buy; purchase
Radical: 乙
Stokes: 6
Traditional: 買
Common words/Phrase:
买方 [mǎi fāng] 【buyer】 
买单 [mǎi dān] 【check】
买卖 [mǎi mai] 【transactions】
买进 [mǎi jìn] 【buy into】

票： 

Pinyin: piào 
Meaning: Ticket; bank note
Radical: 示
Stokes: 11
Traditional: 票
Common words/Phrase:
票房 [piào fáng] 【box office】 
票据 [piào jù] 【note; bill】
票数 [piào shù] 【ballot】
票选 [piào xuǎn] 【elect by ballot】
票号 [piào hào] 【stamp number】