You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Robert Davis need to attend a Women's Fashion week at Chicago, can you please help me in booking?

ASSISTANT: May I know your travel dates?

USER: My travel dates are from 06/29 to 07/01.

ASSISTANT:  Help me with your travel points?

USER: My travel points are LAS to ORD.

ASSISTANT: Do you have any preferences?

USER: I need a halt.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT:  Sorry, no flights are available on your requested dates.

USER: Ok, thank you.

ASSISTANT: Thank you for availing us.