You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Gary Jones here.

ASSISTANT: Jones, how may I help you?

USER: I have to sell my house at Washington. Can you help me in booking a ticket from DTW to DCA?

ASSISTANT: Sure, please provide your itinerary dates.

USER: Sure, my travelling dates are 09/13 and 09/15.

ASSISTANT: Please hold on for a while.

USER: Ok, I need a direct flight.

ASSISTANT: Sorry, no direct flight is available on your route.

USER: It's ok, thank you for searching.

ASSISTANT: Thank you for reaching us.