You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I have a client meeting to attend at Chicago. Can you help me in booking a ticket from JFK to ORD?

ASSISTANT: Sure, may I know your trip dates?

USER: My planned journey dates are 08/05 and 08/07.

ASSISTANT: May I know your name?

USER: My name is Helen Roberts.

ASSISTANT: Sorry, there is no flight on your requested dates.

USER: Its ok, thank you for the information.

ASSISTANT: Thank you for opting us.