You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Steven Martinez here.

ASSISTANT: How may I assist you Martinez?

USER: I want to fly from NY-JFK on 05/27 for attending a seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, we are gleeful to help you. Could you please provide your preferable dates of travelling?

USER: My return date is 05/29.

ASSISTANT: May I know your destination airport code to proceed further?

USER: My destination airport code is DC-DCA. Make sure my price limit is 500.

ASSISTANT: Please hold on to check the flights.

USER: Ok, take your time.

ASSISTANT: According to your information, I have found a flight with 1 connection with the fare of 100. Is it ok for you?

USER: Please proceed for booking the ticket.

ASSISTANT: Ok, your reservation is done successfully with flight number 1000.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us, have a great journey.