You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. May I know your name please?

USER: Andrew Turner is my name.

ASSISTANT: How shall I aid you today?

USER: Can you help me book a direct flight from New York to Washington in order to attend international conference on social issues?

ASSISTANT: Sure, I am here to help you. Kindly provide me how much you can afford for the flight ticket.

USER: I can be able to afford up-to 1000.

ASSISTANT: Can I know your preferable travelling dates so that I can check the availability of flight tickets in between your routes?

USER: I planned my dates of journey on 01/02 and 01/04.

ASSISTANT: Please share your source and destination.

USER: I would like to reach IAD from JFK.

ASSISTANT: Thanks for giving details, please give me some time I will search best flights for you.

USER: Ok.

ASSISTANT: Thanks for waiting, we are unable to provide the flight because terminal up gradation at your destination.

USER: Ok, thank you for your response.

ASSISTANT: Thanks for choosing us, have a nice day.