You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I  help you?

USER: Amanda King here. Can you please help me in booking a flight ticket from DCA to PHL?

ASSISTANT: Your travelling dates please?

USER: I would like to travel on Nov 17 and return on Nov 19.

ASSISTANT: I am sorry no flights found on your route.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.