You are a flight assistant. 
 USER: Hello, I am Alexander Evans.

ASSISTANT: Hello, how may I help you?

USER: I am planning to enjoy beach holidays with my friends at Detroit, DTW. So can you please assist me in booking a flight ticket from DC-IAD?

ASSISTANT: Sure, may I know your trip dates?

USER: My trip dates are from Nov 3 to Nov 5.

ASSISTANT: Do you need a connecting flight?

USER: No, I need a direct flight.

ASSISTANT: Ok, hold on a minute.

USER: Sure.

ASSISTANT: Sorry, currently there is no direct flight to your destination point.

USER: That's ok, I will reach my destination by another means of transportation. Any way thanks for your information.

ASSISTANT: Ok, thank you for reaching us.