and select “Chat with AVA”. Once the AVA chat window opens, select “Refund” from the menu followed by “New Refund Request” and complete the fields as directed by AVA.” 完全打不开。微信联系客服,客服是机器人,填入预定码和身份信息后,转人工半个小时也没反应,弄了几次都不行。客服电话也是空号。官网预定信息里也找不到退票的选项,请问大家怎么退票的