What you have there is a loop.
So in your bot flow, under Loop, there is a few options, for this you would use a "Anything Else?" Loop

If you are not using a bot flow, then the same thing can be achieved with a normal loop, just have to manually do the ask question, max loop etc.
And then in your loop you would have a ask for slot (with list of services)
And a switch or if decision tree, to action that service or send to an agent.
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Anton Vroon
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