聊天

Pinyin: liáo tiān
Meaning：Chat; cose
Sentence:  请他来坐坐聊天。Ask him to stop by for a chat.

More:

聊：

Pinyin: liáo
Meaning: To chat; to kill time
Radical: 耳
Stokes: 11
Traditional: 聊
Common words/Phrase:
聊以自慰 [liáo yǐ zì wèi] 【just to console oneself】
民不聊生 [mín bù liáo shēng] 【the masses live in dire poverty】
百无聊赖 [bǎi wú liáo lài] 【bored to death】

天： 

 
Pinyin: tiān
Meaning: Sky; heaven; day
Radical: 大
Stokes: 4
Traditional: 天
Common words/Phrase:
天使 [tiān shǐ] 【angel】
天堂 [tiān tang] 【heaven; paradise】
天空 [tiān kōng] 【sky】
天气 [tiān qì] 【weather】
天然 [tiān rán] 【natural】