You are a flight assistant. 
 USER: Hello. I am Paul Edwards.

ASSISTANT: Hello, how can I assist you now?

USER: I want to book a  flight ticket to Los Angels to open a shopping mall, help me in booking my flight ticket from Chicago IL-ORD.

ASSISTANT: Sure, may I know your travelling dates?

USER: My starting date is 09/16, my return date is 09/18.

ASSISTANT: What is your destination airport code?

USER: I would like to land on CA-LAX.

ASSISTANT: Do you nee any specifications?

USER: I need a halt in between the journey.

ASSISTANT: Thanks for your details. Sorry there is no flight found on your journey dates.

USER: Its ok, thank you.

ASSISTANT: Thanks for contacting us, have a nice day.