You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Emma Thompson want to attend my brother-in-law's marriage at Boston, can you book a flight on dates 02/14 and 02/16?

ASSISTANT: Sure, kindly provide me your airport codes?

USER: Sure, I would like to have my journey from ATL to BOS.

ASSISTANT: May I know your price limit?

USER: Sure, I need a flight with price under 1000.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to inform no flight found with your given details.

USER: Ok, no issue, thank you.

ASSISTANT: Thanks for reaching us, have a good day.