You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you at this moment?

USER: I am Thomas Nelson, will you help me to book a ticket from Washington, DCA to New York, EWR?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can I know your travelling dates?

USER: My travelling dates are on 02/21 and 02/23.

ASSISTANT: Do you require a connection in between your journey?

USER: I need a connection in between journey.

ASSISTANT: Please wait, let me check the availability of flights and revert to you.

USER: Sure.

ASSISTANT: Sorry, there were no flights found from Washington to reach New York.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.