You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am David Davis, I want to book a flight to New York on 03/07 to attend a meeting. Can you book a return flight on 03/09 for me?

ASSISTANT: Sure, can you please share your other date of travelling? Please specify your airport locations?

USER: I will fly from CO-DEN to NY-EWR.

ASSISTANT: Do you need any halt in between journey? Ok, please wait a moment.

USER: Sure.

ASSISTANT: May I know your budget for airfare?

USER: My budget is 200.

ASSISTANT: Sorry, currently no airlines providing service within that price.

USER: Ok, thank you for the details.

ASSISTANT: Thank you for availing us.