Responding to gratitude
When someone thanks you and you need to acknowledge it appropriately. The register of your response signals social distance, warmth, and relative status.
Tone Spectrum
Informal
Slightly
Informal
Neutral
Slightly
Formal
Formal
Register Variations
Cultural context
In American service culture, 'my pleasure' has become a marker of premium service (vs. 'no problem' for casual). In Australian English, 'no worries' functions as an all-purpose pragmatic particle beyond just gratitude responses — it can mean 'yes,' 'it's fine,' or 'don't mention it.' In corporate contexts, 'happy to help' is the safe alternative — minimizing social debt without sounding too casual.