I am not a native English speaker and have a question about alternative expressions for "no thank you" especially in a Cafe/restaurant.
When I order something over a counter or at a table, sometimes staffs/waiters friendly offer some recommendations like "How would you like today's soup with?" or "Would you like to try new dark chocolate cookies?" with good smiles.
I know the best response to their friendliness is to order their recommendations but most of the time I cannot. I do my best to express my appreciation saying "no thank you" with a regretful smile but I always feel bad about my poor vocabulary.
Could you tell me any friendly expressions other than "no thank you" that I can use in that situation?