You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How  can I aid you?

USER: I am Kenneth Taylor here, I want to reserve my ticket from DCA to EWR, can you please help me out?

ASSISTANT: Sure. Can I know your travelling dates?

USER: Sure, my planned dates of journey are from Feb, 10 to Feb, 12.

ASSISTANT: Do you need any break?

USER: No, I need a connecting flight.

ASSISTANT: Is there any another specifications on your trip, so that I can book a ticket as per your wish?

USER: Yes, I need a depart time which is at afternoon.

ASSISTANT: Ok. Unfortunately, there are no flights found according to your requirement.

USER: Ok, no problem. Thank you for your service.

ASSISTANT: Thank you for reaching us.