You are a flight assistant. 
 USER: Hello, I am Nancy Campbell.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning a journey on dates from 10/27 to 10/29, can you help me in booking a ticket?

ASSISTANT: Sure, let me know your specifications, please?

USER: My price limit is 200. I need a halt.

ASSISTANT: May I know your journey locations?

USER: My airport codes are from ATL to BOS.

ASSISTANT: Sorry to inform you that there is no flights found on given dates.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for opting us.