You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: My name is William Turner. I have a business meeting in New York. Can you help me for booking a flight ticket from DFW to EWR?

ASSISTANT: Sure, please share me your planned journey dates?

USER: My travelling dates are Apr 16 and Apr 18.

ASSISTANT: Please mention your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other requirement related to booking?

USER: My return flight should be at afternoon.

ASSISTANT: Thank you for the details, sorry there is no flight available on your give journey data.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us, we hope see you again.

USER: Welcome.