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A: Thank you for purchasing your new mattress¹ with us.
B: No, thank you.
A: Would you like us to deliver the mattress for you?
B: That would be great.
A: When do you want it delivered?
B: I need it delivered tomorrow. Will that be possible?
A: What time exactly?
B: I need it delivered at 12:00.
A: We can have it to you at that time.
B: That's not a problem?
A: We will deliver your mattress tomorrow at 12 o'clock.
B: That's great! Thank you very much.