You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I want to reserve my ticket from JFK to DCA to attend meeting at Washington, can you please help me in booking?

ASSISTANT: I am here to help you, may I know your name?

USER: Sure, my name is John Scott.

ASSISTANT: May I know your journey dates?

USER: Sure, my planned dates of journey are from Oct, 03 to Oct, 05.

ASSISTANT: Is there any other requirements?

USER: Yes, I want to return at evening time.

ASSISTANT: Do you have any specifications?

USER: Yes, I want to fly in a connecting flight.

ASSISTANT: sorry, no flight is running on your route.

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

ASSISTANT: Thanks for choosing us.