You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I help you.

USER: My name is Scott Collins.

ASSISTANT: ?

USER: Can you please help me with booking a flight ticket from IL - ORD to CA - SFO?

ASSISTANT: Sure,could you please provide me with your journey dates.

USER: OK, my departure date is on 12/29 and the return date is on 12/31.

ASSISTANT: Just a moment,I will for a flight with your details.

USER: Sure. The price limit should not exceed 1000 and the connection limit should be only 1.

ASSISTANT: Sorry,there is no flight found for you right now. Thank you.

USER: That's really sad. Anyways, thank you for your help. Have a great day.

ASSISTANT: Have a great day.