You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Can you help me in booking a flight ticket from LAS to DCA?'.

ASSISTANT: May I know your dates of travel?

USER: I want to fly on Oct 07 and return on Oct 09.

ASSISTANT: Ok, let me know your name in the meanwhile?

USER: I am Charles Gonzalez.

ASSISTANT: There is a connecting flight-1006 with price 200, is it fine for you?

USER: Don't proceed to booking. I need a direct flight.

ASSISTANT: Sorry, there is no direct flight for you on your route.

USER: Thank you for your information.

ASSISTANT: Thanks for contacting us.