You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best I can provide assistance to you?

USER: I am Helen Moore. I want to book a flight ticket from DFW to ORD. Could you help me in booking?

ASSISTANT: Sure, please share me your travel dates.

USER: My travelling dates are from 03/04 to 03/06.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Do you have any price restriction?

USER: My price limit is 200.

ASSISTANT: We found a Southwest airline with flight number 1000 and fare is 200. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is confirmed with connecting flight.

USER: Thank you for helping me.

ASSISTANT: Thank you.