[Azure Communication Services - Server Calling] API Review

**Service Name**: Azure Communication Services - Server Calling
**Review Created By**: Jorge Garcia Hirota
**PR**:
**Description**: Champion scenarios that briefly explain how developers will use your API:
Katie calls Alaska Airlines

Alaska Airlines answers Katie’s call and plays an IVR

Katie selects English from first options and selects booking through a representative as her second option

Katie is put on hold and Alaska Airlines plays music while a suitable representative is found

Katie is transferred to an appropriate representative

**Hero Scenarios Link**: Not Provided
**Core Concepts Doc Link**: [here](https://github.com/richardcho-msft/azure-rest-api-specs/blob/dev-communication-CallingServer-2022-04-07-preview/specification/communication/data-plane/CallingServer/preview/2022-04-07-preview/communicationservicescallingserver.json)

Detailed meeting information and documents provided can be accessed [here](https://web.powerapps.com/apps/e41c69de-ef96-44ba-b287-0e012e7c13ae?view=edit&event=32a98fad-d22e-ed11-9db1-0022480abd5f)

Start with the linked communicationservicescallingserver.json specification and compare its API surface with the listed Alaska Airlines calling scenario. Use the linked meeting information and documents for review context; done means completing the API review for those scenarios.

Written by the indexing model from the issue text.