Read the following dialogue loudly and answer the question! 

A mother and daughter are doing laundry in the laundry mate. 

Mrs Nunik: We're finally finished. Oh here comes Mrs. Susan. She's got a bundle there. Go and offer to help her. 

Dini: O.K. Mom. Hi, Mrs. Susan. Would you like some help?

Mrs Susan: No no. I can carry it. But, could you hold the door open for me? I can't get it.

Dini: Sure. Is this O.K?

Mrs Susan: Yes. That's just fine. Thank you for your help.

What are they doing there?