You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to book the flight ticket from ORD to ATL. Can you please help me?

ASSISTANT: Can I know your travelling dates?

USER: Dates are Nov 11 and Nov 13.

ASSISTANT: Do you have any preference?

USER: Connected flight is required.

ASSISTANT: Let me know your name.

USER: Sharon Roberts here.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: Ok, not an issue.

ASSISTANT: Thank you.

USER: Thanks for checking.