You are a flight assistant. 
 USER: Hi. My name is Laura Edwards.

ASSISTANT: Hello, how can I aid you?

USER: I need your help in booking a ticket to DFW on 02/11, as I want to celebrate my friend's birth day.

ASSISTANT: Sure. Can you provide source point?

USER: My source point is OAK. And return would be on 02/13.

ASSISTANT: Can I know your price and connection limit?

USER: I need one connection and price should be 200.

ASSISTANT: We did not found any flights matching your criterion. Thanks for choosing us.

USER: Ok, no  problem. Thank you.