You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Myself Benjamin Hernandez, planning to visit Washington city. Can you please book me a ticket from EWR to DCA?

ASSISTANT: Can I know your travel dates?

USER: My preferable journey dates are from 03/08 to 03/10.

ASSISTANT: Hernandez, there is no flight available on your requested dates.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

ASSISTANT: You are welcome.