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Context.
(user gets in on third floor) | |
System: | Which floor do you want? |
User: | Ground floor. |
System: | I'm taking you to the ground floor. |
(trip starts) | |
User: | I left my bag in the office. Can we go back? |
System: | Yes. I'm taking you to the third floor. |
The user specifies a target floor. After the trip has started he says that he wants to go ``back''. The system interprets ``back'' in context and understands that the user wants to go to the third floor, where the trip started from.
Current state and possibility of extension: See Section 4.5.4. See also description of elevator, Section 4.3.
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