You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Catherine Davis. I want to see the Millennium Park at Chicago, can you please book me a ticket with a single connection?

ASSISTANT: Sure. May I know your travelling dates?

USER: My travelling dates are from 02/22 to 02/24.

ASSISTANT: Can you share me your airport codes?

USER: My airport codes are ATL and ORD.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Thanks for waiting. There is no connecting flight available to your destination.

USER: Ok, no issues.

ASSISTANT: Thank you.

USER: Thank you for your response.