You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: I am Jessica Smith. I want to see magic show at Chicago, please help me to book my flight ticket from ATL to ORD.

ASSISTANT: Sure, I will help you with that. Can you please mention your preferable travel dates?

USER: Yes, I want to depart on Dec 4th and I will return back in the evening on Dec 6th.

ASSISTANT: Are you okay with connecting flight or you need a direct flight?

USER: I prefer for a single connection flight.

ASSISTANT: Do you have any another specifications?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Sad to hear that. Anyway, thank you for checking.

ASSISTANT: Thank you for reaching us.