You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Catherine Campbell. I want to book a flight ticket from NY - EWR to TX - DFW, so please help me in booking a flight ticket.

ASSISTANT: May I know your travel dates?

USER: I want to fly on 08/07 and return on 08/09.

ASSISTANT:  Do you have any connecting limit?

USER: I need a direct flight.

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

USER: Thank you for your information.

ASSISTANT: Thank you for availing us.