The text describes a conversation between Matt and a representative about donating to an environmental organization. The task is to identify which sentences are spoken by the representative (R) and which by the caller (C).

Dialogue Analysis:

• Rep: Hello. How can I help you?
• Matt: Hi. I'm interested in making a donation.
• Rep: That's great. Do you want to make a one-off donation or would you prefer to make a regular monthly one?
• Matt: A monthly donation, please. Let's say £25 per month.
• Rep: That's very generous. You know that includes free membership, don't you?
• Matt: Oh really? And what are the benefits of membership?
• Rep: You get our magazine every three months and regular post about our campaigns.
• Matt: Good. That's great. How can I pay?
• Rep: Let me give you our bank account details. It's Barclay's Bank, Account No. 39582957831. Could I take your name and address, please?
• Matt: Certainly. My name's Matt Russell and I live at 34 Scarsdale Road, Bromley, Kent.
• Rep: Thank you very much, Mr Russell. You'll receive the latest issue of the magazine and a welcome pack soon.

Explanation: The dialogue clearly labels each speaker as 'Rep:' (Representative) or 'Matt:' (Caller). The task is to distinguish these based on the provided text.