Como eu digo "conversa melosa" em inglês

Português: conversa melosa/ sentimental/ sem firmeza.
Inglês: namby-pamby dialogue/chat, sentimental/ sappy/ mawkish talk.

Exemplo 1: There’s no namby-pamby dialogue or persuasion when building up your army. Ref. theaveragegamer

Exemplo 2: Cannily, he dismissed any namby-pamby chat about benefit to the environment of a read-across from the racetrack to the family saloon (...) Ref. theguardian

Exemplo 3: Some people may say that is sob stuff and sentimental talk. Ref. hansard.parliament

Exemplo 4: At the beginning of the video, the co-maids-of-honour announce ‘enough of the sappy talk’ and then ask the DJ to drop the beat. Ref. metro.co

Exemplo 5: The discipline of a merchantman ought to be assimilated much more closely to that of a modern man-of-war. A ship is not the place for mawkish talk about people's rights. Ref. archive.spectator.co

OBS.: As palavras dialogue, chat e talk são intercambiáveis. Então, qualquer uma delas pode ser usada nos exemplos acima.

Cf. O que significa Namby-pamby?