You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today from my end?

USER: I want to book a ticket from JFK to DCA, can you help me?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: My travel dates are Feb 19 and 21.

ASSISTANT: May I know your name to proceed further?

USER: I am James Mitchell.

ASSISTANT: Do you have any requirement?

USER: I prefer to travel in economy class.

ASSISTANT: Is there any specifications to be met?

USER: I want to travel in normal cost.

ASSISTANT: Please allow me a moment.

USER: Sure, I need a connecting flight.

ASSISTANT: Sorry  James Mitchell, there is no flight in your route.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us.