You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Patrick Roberts here.

ASSISTANT: How can I assist you?

USER: I want to travel from JFK to ORD for attending a Seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Ok, may I know your travelling dates?

USER: My travelling dates are from 07/06 to 07/08. Make sure my price limit is 200.

ASSISTANT: Sorry, no flights found on your route to reserve your ticket.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for reaching us.