You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I planned for a vacation to Washington, DC-DCA. So please help me to book a ticket.

ASSISTANT: Sure, when would you like to travel?

USER: I want to travel on these dates 04/15 and 04/17.

ASSISTANT: Ok, may I know your origin airport code?

USER: I am from New York, nearby airport is NY-EWR. Please make sure that the price should not exceed 200 and the connection limit is 1.

ASSISTANT: But we have a flight with 2 connections, Do you want to go with that?

USER: No. Please don't book the ticket.

ASSISTANT: Sorry there no flight is available with connection 1.

USER: It's ok, thank you for searching.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: My name is Emily Young.

ASSISTANT: Thank you Emily.