在对话最后女士说Let's get a flight from Liverpool then，可推测他们最后会从Liverpool出发。

【听力原文】
W: Berry, we really must book out flight soon.
M: Yes, I know. We can do it on the Internet. Let' s see. There is a flight from Liverpool to Bangkok every day. But we have to change at Milan.
W: So there isn't a direct flight?
M: We can get a direct flight from Heathrow. But it' s more expensive.
W: Let' s get a flight from Liverpool then.