You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Could you help me in booking a flight ticket from DCA to ORD?

ASSISTANT: Sure, can you please share your travel dates?

USER: I want to fly on Jan 17, return on Jan 19.

ASSISTANT: May I know your name to proceed further?

USER: My name is Jack Turner.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: May I know your connection limit?

USER: I want a flight with one connection.

ASSISTANT: Do you have any other specification that you are looking for?

USER: I want normal cost airline.

ASSISTANT: Jack Turner, I am sorry to inform you that there is no flight available at your request.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.