You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you?

USER: I am Melissa Lopez. I want to book a flight ticket, can you help me out?

ASSISTANT: Sure, can you please provide your airport codes?

USER: I am travelling  to from DC-DCA to NY-JFK.

ASSISTANT: Can you please provide your traveling dates for booking flight ticket?

USER: My preferable dates are 06/28 to 06/30.

ASSISTANT: Please wait a moment, I will let you know.

USER: Ok.

ASSISTANT: As per you requested dates there is a flight available with 0 connections and price limit is 100. Shall I proceed?

USER: Sorry,I don't want to proceed.

ASSISTANT: Ok, thank you for contacting us.

USER: Thank you for your help.