You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Pamela Young here. I want to attend a Marriage in New York. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am here to assist you. Can you please let me know your travel dates?

USER: My travelling dates are 05/30 and 06/01.

ASSISTANT: Ok, may I know your source and destination airport codes?

USER: My airport codes are DCA and JFK.

ASSISTANT: Flight-1019 is available in AA airlines and the ticket fare is 300 only. Can I book the ticket for you?

USER: I want to departure on evening and return on evening. If it is matches, then proceed for booking the flight ticket.

ASSISTANT: Sorry, there is no flight as per your requirements.

USER: Anyway, thanks for the information.

ASSISTANT: You are welcome and thank you for choosing us.