Port autogen sample from agentic cook book

[ekzhu]

Create a sample reproducing the travel agency work here: https://github.com/microsoft/agenticcookbook

Let's use the autogen-agentchat API for this.

[MohMaz]

@ekzhu I can take this one, can you please assign it to me?

[victordibia]

We have a few samples here