除了“去哪儿”，今天还要加上 Kayak...
凱薩琳
說
what is Kayak?
Kayak is a search engine designed for travellers. welcome to use it.
凱薩琳
說
in China? or in U.S.?
Kayak is an US site. Please visit www.kayak.com
凱薩琳
說
where do you plan to go?
anywhere... ha ha