You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Can you please help me in booking the flight ticket from ORD to EWR?

ASSISTANT: Sure, I will help you with that. Can you please mention your preferable travel dates?

USER: My travel dates are Feb 21 and Feb 23.

ASSISTANT: May I know your name for further process?

USER: Eric Robinson.

ASSISTANT: Do you have any preferences regarding timings of your journey?

USER: No.

ASSISTANT: Do you have any limits on number of connections?

USER: Yes, I need a single connection flight.

ASSISTANT: Do you have any another specifications?

USER: No.

ASSISTANT: Ok, please hold on a moment.

USER: Ok.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.