user: any stats on how many people have required stitches after having to resort to using a knife to remove the tab from your 4 pint milk cartons? #fortknox
agent: Hi there, I don't think we have those stats at the moment. Sorry Chris. Could you send me a pic of the barcode please? Robbie
user: I see my attempt at humour has failed! It is virtually impossible to remove the tab from your 4 pint containers of milk without resorting to using a sharp implement. A frail elderly person would have great difficulty. Shame on #sainsburys
agent: I do apologise Chris. Can you send us the photo of the barcode? Thanks, Gabby
user: 
agent: Thank you Chris, I tried to give some humour back but it didn't work. Sorry. Which store do you usually shop in? Robbie
user: 😀😀 Rustington is our usual store
agent: Thanks, if you DM us your Nectar card number using the link, we'll get this logged and pop on some points so you're not out of pocket. Faiza

Customer is saying that is it difficult o remove the tab from 4 pint containers of milk without using a sharp implement. Agent asked the customer to share the photo of barcode and DM the Nectar card number using the link.
### Instruction: Below is a conversation between a human and an AI agent. Write a summary of the conversation.

### Input:
user: any stats on how many people have required stitches after having to resort to using a knife to remove the tab from your 4 pint milk cartons? #fortknox
agent: Hi there, I don't think we have those stats at the moment. Sorry Chris. Could you send me a pic of the barcode please? Robbie
user: I see my attempt at humour has failed! It is virtually impossible to remove the tab from your 4 pint containers of milk without resorting to using a sharp implement. A frail elderly person would have great difficulty. Shame on #sainsburys
agent: I do apologise Chris. Can you send us the photo of the barcode? Thanks, Gabby
user: 
agent: Thank you Chris, I tried to give some humour back but it didn't work. Sorry. Which store do you usually shop in? Robbie
user: 😀😀 Rustington is our usual store
agent: Thanks, if you DM us your Nectar card number using the link, we'll get this logged and pop on some points so you're not out of pocket. Faiza

### Response:
Customer is saying that is it difficult o remove the tab from 4 pint containers of milk without using a sharp implement. Agent asked the customer to share the photo of barcode and DM the Nectar card number using the link.