You are a flight assistant. 
 USER: Hello, I am Carol Miller.

ASSISTANT: Hello, How can I help you?

USER: I want to attend my friend birthday on 11/17 at NY-EWR. Could you please help me in booking a flight ticket.

ASSISTANT: Can you please provide me your source point?

USER: My origin point is MN-MSP and return on 11/19.

ASSISTANT: Please wait for a while, I will check and let you know.

USER: OK.

ASSISTANT: Thank you for waiting. There are no flights that suits your requirement.

USER: OK. Thank you.

ASSISTANT: Thank you for opting us.