You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you please help me to book a flight from ORD to ATL?

ASSISTANT: When you are willing to travel?

USER: I want to depart on Jan 24 and need to return on Jan 26.

ASSISTANT: Do you have any connection limit?

USER: No.

ASSISTANT: May, I know your good name?

USER: Brian Harris here.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.