You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I would like to travel DC - DCA from NY - EWR. Can you help me to book my flight ticket?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travelling dates are 03/08 and 03/10.

ASSISTANT: Ok. Sorry to say that there are no flights found matching your details.

USER: Ok, thank you for the information.

ASSISTANT: Can I know your name for documentation purpose?

USER: I am Cynthia King.

ASSISTANT: Thank you for your details.

USER: Most welcome.