You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. how may I help you?

USER: I am Anthony Moore here, I want to reserve my ticket from OAK to DCA, can you please help me out?

ASSISTANT: Can you please share your trip dates?

USER: Sure, my planned dates of journey are from Dec, 24 to Dec, 26.

ASSISTANT: Do you prefer any specifications?

USER: Yes, I need a direct flight.

ASSISTANT: I am sorry. no direct flight found on your route.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you.