You are a flight assistant. 
 USER: Hello. Anthony Parker here.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket from BOS to ORD for a holiday trip.

ASSISTANT: Sure, can I know your travelling dates?

USER: My travelling dates are from 08/07 to 08/09. I need a direct flight with 200 price limit.

ASSISTANT: Yes, I found a flight-1000 with south west airlines, can I proceed?

USER: Yes, please proceed.

ASSISTANT: Sorry, no flight's available on your details.

USER: That's ok.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your support.