Work in pairs. Use the models in 1 to make similar conversations for these situations. One of you is A, the other is B. Use the expressions below to help you.

1. A is at a museum or robot exhibition where he/she can see B in the crowd, A wants to get B's attention.

2. A is a scientist giving a talk on the use of AI at home. B is in the audience, and he/she wants to interrupt the scientist to ask a question.